0
Your cart

Your cart is empty

Browse All Departments
Price
  • R100 - R250 (24)
  • R250 - R500 (100)
  • R500+ (4,115)
  • -
Status
Format
Author / Contributor
Publisher

Books > Science & Mathematics > Mathematics > Calculus & mathematical analysis > Vector & tensor analysis

Almost Periodic Type Functions and Ergodicity (Hardcover, 2003 ed.): Zhang Chuanyi Almost Periodic Type Functions and Ergodicity (Hardcover, 2003 ed.)
Zhang Chuanyi
R3,763 Discovery Miles 37 630 Ships in 10 - 15 working days

The theory of almost periodic functions was first developed by the Danish mathematician H. Bohr during 1925-1926. Then Bohr's work was substantially extended by S. Bochner, H. Weyl, A. Besicovitch, J. Favard, J. von Neumann, V. V. Stepanov, N. N. Bogolyubov, and oth ers. Generalization of the classical theory of almost periodic functions has been taken in several directions. One direction is the broader study of functions of almost periodic type. Related this is the study of ergodic ity. It shows that the ergodicity plays an important part in the theories of function spectrum, semigroup of bounded linear operators, and dynamical systems. The purpose of this book is to develop a theory of almost pe riodic type functions and ergodicity with applications-in particular, to our interest-in the theory of differential equations, functional differen tial equations and abstract evolution equations. The author selects these topics because there have been many (excellent) books on almost periodic functions and relatively, few books on almost periodic type and ergodicity. The author also wishes to reflect new results in the book during recent years. The book consists of four chapters. In the first chapter, we present a basic theory of four almost periodic type functions. Section 1. 1 is about almost periodic functions. To make the reader easily learn the almost periodicity, we first discuss it in scalar case. After studying a classical theory for this case, we generalize it to finite dimensional vector-valued case, and finally, to Banach-valued (including Hilbert-valued) situation."

Calculus Set Free - Infinitesimals to the Rescue (Paperback): C Bryan Dawson Calculus Set Free - Infinitesimals to the Rescue (Paperback)
C Bryan Dawson
R2,059 Discovery Miles 20 590 Ships in 9 - 15 working days

Calculus Set Free: Infinitesimals to the Rescue is a single-variable calculus textbook that incorporates the use of infinitesimal methods. The procedures used throughout make many of the calculations simpler and the concepts clearer for undergraduate students, heightening success and easing a significant burden of entry into STEM disciplines. This text features a student-friendly exposition with ample marginal notes, examples, illustrations, and more. The exercises include a wide range of difficulty levels, stretching from very simple "rapid response" questions to the occasional exercise meant to test knowledge. While some exercises require the use of technology to work through, none are dependent on any specific software. The answers to odd-numbered exercises in the back of the book include both simplified and non-simplified answers, hints, or alternative answers. Throughout the text, notes in the margins include comments meant to supplement understanding, sometimes including line-by-line commentary for worked examples. Without sacrificing academic rigor, Calculus Set Free offers an engaging style that helps students to solidify their understanding on difficult theoretical calculus.

Theory of Third-Order Differential Equations (Hardcover, 2014 ed.): Seshadev Padhi, Smita Pati Theory of Third-Order Differential Equations (Hardcover, 2014 ed.)
Seshadev Padhi, Smita Pati
R3,946 Discovery Miles 39 460 Ships in 12 - 17 working days

This book discusses the theory of third-order differential equations. Most of the results are derived from the results obtained for third-order linear homogeneous differential equations with constant coefficients. M. Gregus, in his book written in 1987, only deals with third-order linear differential equations. These findings are old, and new techniques have since been developed and new results obtained.

Chapter 1 introduces the results for oscillation and non-oscillation of solutions of third-order linear differential equations with constant coefficients, and a brief introduction to delay differential equations is given. The oscillation and asymptotic behavior of non-oscillatory solutions of homogeneous third-order linear differential equations with variable coefficients are discussed in Ch. 2. The results are extended to third-order linear non-homogeneous equations in Ch. 3, while Ch. 4 explains the oscillation and non-oscillation results for homogeneous third-order nonlinear differential equations. Chapter 5 deals with the "z"-type oscillation and non-oscillation of third-order nonlinear and non-homogeneous differential equations. Chapter 6 is devoted to the study of third-order delay differential equations. Chapter 7 explains the stability of solutions of third-order equations. Some knowledge of differential equations, analysis and algebra is desirable, but not essential, in order to study the topic.

Integral Inequalities on Time Scales (Paperback): Svetlin G. Georgiev Integral Inequalities on Time Scales (Paperback)
Svetlin G. Georgiev
R2,390 R1,901 Discovery Miles 19 010 Save R489 (20%) Ships in 10 - 15 working days

This book is devoted to recent developments of linear and nonlinear integral inequalities on time scales. The book is intended for the use in the field of dynamic calculus on time scales, dynamic equation and integral equations on time scales. It is also suitable for graduate courses in the above fields. The book is designed for those who have mathematical background on time scales calculus.

Matrix Positivity (Hardcover): Charles R. Johnson, Ronald L. Smith, Michael J. Tsatsomeros Matrix Positivity (Hardcover)
Charles R. Johnson, Ronald L. Smith, Michael J. Tsatsomeros
R3,344 Discovery Miles 33 440 Ships in 12 - 17 working days

Matrix positivity is a central topic in matrix theory: properties that generalize the notion of positivity to matrices arose from a large variety of applications, and many have also taken on notable theoretical significance, either because they are natural or unifying. This is the first book to provide a comprehensive and up-to-date reference of important material on matrix positivity classes, their properties, and their relations. The matrix classes emphasized in this book include the classes of semipositive matrices, P-matrices, inverse M-matrices, and copositive matrices. This self-contained reference will be useful to a large variety of mathematicians, engineers, and social scientists, as well as graduate students. The generalizations of positivity and the connections observed provide a unique perspective, along with theoretical insight into applications and future challenges. Direct applications can be found in data analysis, differential equations, mathematical programming, computational complexity, models of the economy, population biology, dynamical systems and control theory.

Weird Maths - At the Edge of Infinity and Beyond (Paperback, New Edition): David Darling, Agnijo Banerjee Weird Maths - At the Edge of Infinity and Beyond (Paperback, New Edition)
David Darling, Agnijo Banerjee 1
R350 R321 Discovery Miles 3 210 Save R29 (8%) Ships in 9 - 15 working days

Is anything truly random? Does infinity actually exist? Could we ever see into other dimensions?

In this delightful journey of discovery, David Darling and extraordinary child prodigy Agnijo Banerjee draw connections between the cutting edge of modern maths and life as we understand it, delving into the strange would we like alien music? and venturing out on quests to consider the existence of free will and the fantastical future of quantum computers. Packed with puzzles and paradoxes, mind-bending concepts and surprising solutions, this is for anyone who wants life s questions answered even those you never thought to ask.

How to Fall Slower Than Gravity - And Other Everyday (and Not So Everyday) Uses of Mathematics and Physical Reasoning... How to Fall Slower Than Gravity - And Other Everyday (and Not So Everyday) Uses of Mathematics and Physical Reasoning (Paperback)
Paul J. Nahin
R505 Discovery Miles 5 050 Ships in 12 - 17 working days

An engaging collection of intriguing problems that shows you how to think like a mathematical physicist Paul Nahin is a master at explaining odd phenomena through straightforward mathematics. In this collection of twenty-six intriguing problems, he explores how mathematical physicists think. Always entertaining, the problems range from ancient catapult conundrums to the puzzling physics of a very peculiar material called NASTYGLASS-and from dodging trucks to why raindrops fall slower than the rate of gravity. The questions raised may seem impossible to answer at first and may require an unexpected twist in reasoning, but sometimes their solutions are surprisingly simple. Nahin's goal, however, is always to guide readers-who will need only to have studied advanced high school math and physics-in expanding their mathematical thinking to make sense of the curiosities of the physical world. The problems are in the first part of the book and the solutions are in the second, so that readers may challenge themselves to solve the questions on their own before looking at the explanations. The problems show how mathematics-including algebra, trigonometry, geometry, and calculus-can be united with physical laws to solve both real and theoretical problems. Historical anecdotes woven throughout the book bring alive the circumstances and people involved in some amazing discoveries and achievements. More than a puzzle book, this work will immerse you in the delights of scientific history while honing your math skills.

Basic Analysis II - A Modern Calculus in Many Variables (Hardcover): James K. Peterson Basic Analysis II - A Modern Calculus in Many Variables (Hardcover)
James K. Peterson
R3,693 Discovery Miles 36 930 Ships in 12 - 17 working days

Basic Analysis II: A Modern Calculus in Many Variables focuses on differentiation in Rn and important concepts about mappings from Rn to Rm, such as the inverse and implicit function theorem and change of variable formulae for multidimensional integration. These topics converge nicely with many other important applied and theoretical areas which are no longer covered in mathematical science curricula. Although it follows on from the preceding volume, this is a self-contained book, accessible to undergraduates with a minimal grounding in analysis. Features Can be used as a traditional textbook as well as for self-study Suitable for undergraduates in mathematics and associated disciplines Emphasises learning how to understand the consequences of assumptions using a variety of tools to provide the proofs of propositions

Basic Analysis III - Mappings on Infinite Dimensional Spaces (Hardcover): James K. Peterson Basic Analysis III - Mappings on Infinite Dimensional Spaces (Hardcover)
James K. Peterson
R3,678 Discovery Miles 36 780 Ships in 12 - 17 working days

Basic Analysis III: Mappings on Infinite Dimensional Spaces is intended as a first course in abstract linear analysis. This textbook cover metric spaces, normed linear spaces and inner product spaces, along with many other deeper abstract ideas such a completeness, operators and dual spaces. These topics act as an important tool in the development of a mathematically trained scientist. Feature: Can be used as a traditional textbook as well as for self-study Suitable for undergraduates in mathematics and associated disciplines Emphasizes learning how to understand the consequences of assumptions using a variety of tools to provide the proofs of propositions

Fixed Points of Nonlinear Operators - Iterative Methods (Paperback): Haiyun Zhou, Xiaolong Qin Fixed Points of Nonlinear Operators - Iterative Methods (Paperback)
Haiyun Zhou, Xiaolong Qin; Contributions by National Defense Industry Press
R2,968 R2,340 Discovery Miles 23 400 Save R628 (21%) Ships in 10 - 15 working days

Iterative Methods for Fixed Points of Nonlinear Operators offers an introduction into iterative methods of fixed points for nonexpansive mappings, pseudo-contrations in Hilbert Spaces and in Banach Spaces. Iterative methods of zeros for accretive mappings in Banach Spaces and monotone mappings in Hilbert Spaces are also discussed. It is an essential work for mathematicians and graduate students in nonlinear analysis.

Calculus, International Metric Edition (Paperback, 11th edition): Ron Larson, Bruce Edwards Calculus, International Metric Edition (Paperback, 11th edition)
Ron Larson, Bruce Edwards
R1,514 R1,410 Discovery Miles 14 100 Save R104 (7%) Ships in 10 - 15 working days

Larson/Edwards' CALCULUS, 11E, INTERNATIONAL METRIC EDITION expertly combines the printed textbook and technology to deliver everything you need to master the material and pass the class. Stepped-out solution videos with instruction are available at CalcView.com for selected exercises throughout the text, and the website CalcChat.com presents free solutions to all of the odd-numbered exercises in the text.

Functional Analysis and Valuation Theory (Hardcover): Lawrence Narici Functional Analysis and Valuation Theory (Hardcover)
Lawrence Narici; Series edited by Zuhair Nashed, Earl Taft
R6,860 Discovery Miles 68 600 Ships in 12 - 17 working days

This book presents functional analysis over arbitrary valued fields and investigates normed spaces and algebras over fields with valuation, with attention given to the case when the norm and the valuation are nonarchimedean. It considers vector spaces over fields with nonarchimedean valuation.

Theoretical Aspects (Paperback): Alexander Apelblat Theoretical Aspects (Paperback)
Alexander Apelblat
R2,669 R2,111 Discovery Miles 21 110 Save R558 (21%) Ships in 10 - 15 working days

Bessel functions have the peculiarity of being functions of two independent variables: argument and order. They have been studied extensively because of their countless applications, but the vast majority of available literature is devoted to the case of fixed order, variable argument. This two-volume work explores the opposite case. This volume focuses on properties of the functions and mathematical operations with respect to the order.

Numerical Results (Paperback): Alexander Apelblat Numerical Results (Paperback)
Alexander Apelblat
R2,744 R2,186 Discovery Miles 21 860 Save R558 (20%) Ships in 10 - 15 working days

Bessel functions have the peculiarity of being functions of two independent variables: argument and order. They have been studied extensively because of their countless applications, but the vast majority of available literature is devoted to the case of fixed order, variable argument. This two-volume work explores the opposite case. This volume collects tabulations of the first, second, and third derivatives with respect to the order.

Quality Engineering Techniques - An Innovative and Creative Process Model (Hardcover): Ramin Rostamkhani, Mahdi Karbasian Quality Engineering Techniques - An Innovative and Creative Process Model (Hardcover)
Ramin Rostamkhani, Mahdi Karbasian
R5,170 Discovery Miles 51 700 Ships in 12 - 17 working days

In today's industrial and complex world, the progress of change is incredible. The amount of information which needs to be analyzed is very large and time has become more and more limited. Industries and firms of all sizes desire to increase productivity and sustainability to keep their competitive edge in the marketplace. One of the best tools for achieving this is the application of Quality Engineering Techniques (QET). This book will introduce the integrated model and the numerical applications for implementing it.

Multi-Variable Calculus - A First Step (Paperback): Yunzhi Zou Multi-Variable Calculus - A First Step (Paperback)
Yunzhi Zou
R1,796 R1,456 Discovery Miles 14 560 Save R340 (19%) Ships in 10 - 15 working days

This book is a concise yet complete calculus textbook covering all essential topics in multi-variable calculus, including geometry in three-dimensional space, partial derivatives, maximum/minimum, multiple integrals and vector calculus as well as a chapter for ODE. All the chapters are constructed in a logical way to outline the essence of each topic and to address potential difficulties arising from learning.

Vector Calculus Student Solutions Manual (Paperback, New): M Lovric Vector Calculus Student Solutions Manual (Paperback, New)
M Lovric
R3,276 R1,880 Discovery Miles 18 800 Save R1,396 (43%) Ships in 12 - 17 working days

This book gives a comprehensive and thorough introduction to ideas and major results of the theory of functions of several variables and of modern vector calculus in two and three dimensions. Clear and easy-to-follow writing style, carefully crafted examples, wide spectrum of applications and numerous illustrations, diagrams, and graphs invite students to use the textbook actively, helping them to both enforce their understanding of the material and to brush up on necessary technical and computational skills. Particular attention has been given to the material that some students find challenging, such as the chain rule, Implicit Function Theorem, parametrizations, or the Change of Variables Theorem.

Basic Analysis I - Functions of a Real Variable (Hardcover): James K. Peterson Basic Analysis I - Functions of a Real Variable (Hardcover)
James K. Peterson
R2,934 Discovery Miles 29 340 Ships in 12 - 17 working days

Basic Analysis I: Functions of a Real Variable is designed for students who have completed the usual calculus and ordinary differential equation sequence and a basic course in linear algebra. This is a critical course in the use of abstraction, but is just first volume in a sequence of courses which prepare students to become practicing scientists. This book is written with the aim of balancing the theory and abstraction with clear explanations and arguments, so that students who are from a variety of different areas can follow this text and use it profitably for self-study. It can also be used as a supplementary text for anyone whose work requires that they begin to assimilate more abstract mathematical concepts as part of their professional growth. Features Can be used as a traditional textbook as well as for self-study Suitable for undergraduate mathematics students, or for those in other disciplines requiring a solid grounding in abstraction Emphasises learning how to understand the consequences of assumptions using a variety of tools to provide the proofs of propositions

An Introduction to Probabilistic Number Theory (Hardcover): Emmanuel Kowalski An Introduction to Probabilistic Number Theory (Hardcover)
Emmanuel Kowalski
R1,313 Discovery Miles 13 130 Ships in 12 - 17 working days

Despite its seemingly deterministic nature, the study of whole numbers, especially prime numbers, has many interactions with probability theory, the theory of random processes and events. This surprising connection was first discovered around 1920, but in recent years the links have become much deeper and better understood. Aimed at beginning graduate students, this textbook is the first to explain some of the most modern parts of the story. Such topics include the Chebychev bias, universality of the Riemann zeta function, exponential sums and the bewitching shapes known as Kloosterman paths. Emphasis is given throughout to probabilistic ideas in the arguments, not just the final statements, and the focus is on key examples over technicalities. The book develops probabilistic number theory from scratch, with short appendices summarizing the most important background results from number theory, analysis and probability, making it a readable and incisive introduction to this beautiful area of mathematics.

Big Data Analytics and Computing for Digital Forensic Investigations (Hardcover): Suneeta Satpathy, Sachi Mohanty Big Data Analytics and Computing for Digital Forensic Investigations (Hardcover)
Suneeta Satpathy, Sachi Mohanty
R2,547 Discovery Miles 25 470 Ships in 12 - 17 working days

Digital forensics has recently gained a notable development and become the most demanding area in today's information security requirement. This book investigates the areas of digital forensics, digital investigation and data analysis procedures as they apply to computer fraud and cybercrime, with the main objective of describing a variety of digital crimes and retrieving potential digital evidence. Big Data Analytics and Computing for Digital Forensic Investigations gives a contemporary view on the problems of information security. It presents the idea that protective mechanisms and software must be integrated along with forensic capabilities into existing forensic software using big data computing tools and techniques. Features Describes trends of digital forensics served for big data and the challenges of evidence acquisition Enables digital forensic investigators and law enforcement agencies to enhance their digital investigation capabilities with the application of data science analytics, algorithms and fusion technique This book is focused on helping professionals as well as researchers to get ready with next-generation security systems to mount the rising challenges of computer fraud and cybercrimes as well as with digital forensic investigations. Dr Suneeta Satpathy has more than ten years of teaching experience in different subjects of the Computer Science and Engineering discipline. She is currently working as an associate professor in the Department of Computer Science and Engineering, College of Bhubaneswar, affiliated with Biju Patnaik University and Technology, Odisha. Her research interests include computer forensics, cybersecurity, data fusion, data mining, big data analysis and decision mining. Dr Sachi Nandan Mohanty is an associate professor in the Department of Computer Science and Engineering at ICFAI Tech, ICFAI Foundation for Higher Education, Hyderabad, India. His research interests include data mining, big data analysis, cognitive science, fuzzy decision-making, brain-computer interface, cognition and computational intelligence.

Operator Theory - A Comprehensive Course in Analysis, Part 4 (Hardcover): Barry Simon Operator Theory - A Comprehensive Course in Analysis, Part 4 (Hardcover)
Barry Simon
R2,814 Discovery Miles 28 140 Ships in 12 - 17 working days

A Comprehensive Course in Analysis by Poincare Prize winner Barry Simon is a five-volume set that can serve as a graduate-level analysis textbook with a lot of additional bonus information, including hundreds of problems and numerous notes that extend the text and provide important historical background. Depth and breadth of exposition make this set a valuable reference source for almost all areas of classical analysis. Part 4 focuses on operator theory, especially on a Hilbert space. Central topics are the spectral theorem, the theory of trace class and Fredholm determinants, and the study of unbounded self-adjoint operators. There is also an introduction to the theory of orthogonal polynomials and a long chapter on Banach algebras, including the commutative and non-commutative Gel'fand-Naimark theorems and Fourier analysis on general locally compact abelian groups.

Counting with Symmetric Functions (Paperback, Softcover reprint of the original 1st ed. 2015): Jeffrey Remmel, Anthony Mendes Counting with Symmetric Functions (Paperback, Softcover reprint of the original 1st ed. 2015)
Jeffrey Remmel, Anthony Mendes
R3,023 Discovery Miles 30 230 Ships in 10 - 15 working days

This monograph provides a self-contained introduction to symmetric functions and their use in enumerative combinatorics. It is the first book to explore many of the methods and results that the authors present. Numerous exercises are included throughout, along with full solutions, to illustrate concepts and also highlight many interesting mathematical ideas. The text begins by introducing fundamental combinatorial objects such as permutations and integer partitions, as well as generating functions. Symmetric functions are considered in the next chapter, with a unique emphasis on the combinatorics of the transition matrices between bases of symmetric functions. Chapter 3 uses this introductory material to describe how to find an assortment of generating functions for permutation statistics, and then these techniques are extended to find generating functions for a variety of objects in Chapter 4. The next two chapters present the Robinson-Schensted-Knuth algorithm and a method for proving Polya's enumeration theorem using symmetric functions. Chapters 7 and 8 are more specialized than the preceding ones, covering consecutive pattern matches in permutations, words, cycles, and alternating permutations and introducing the reciprocity method as a way to define ring homomorphisms with desirable properties. Counting with Symmetric Functions will appeal to graduate students and researchers in mathematics or related subjects who are interested in counting methods, generating functions, or symmetric functions. The unique approach taken and results and exercises explored by the authors make it an important contribution to the mathematical literature.

Recent Advances in Mathematical Sciences - Selected Papers from ICREM7 2015 (Paperback, Softcover reprint of the original 1st... Recent Advances in Mathematical Sciences - Selected Papers from ICREM7 2015 (Paperback, Softcover reprint of the original 1st ed. 2016)
Adem Kilicman, Hari M. Srivastava, M. Mursaleen, Zanariah Abdul Majid
R3,020 Discovery Miles 30 200 Ships in 10 - 15 working days

This book features selected papers from The Seventh International Conference on Research and Education in Mathematics that was held in Kuala Lumpur, Malaysia from 25 - 27th August 2015. With chapters devoted to the most recent discoveries in mathematics and statistics and serve as a platform for knowledge and information exchange between experts from academic and industrial sectors, it covers a wide range of topics, including numerical analysis, fluid mechanics, operation research, optimization, statistics and game theory. It is a valuable resource for pure and applied mathematicians, statisticians, engineers and scientists, and provides an excellent overview of the latest research in mathematical sciences.

Mathematical Models in Biology - Bringing Mathematics to Life (Paperback, Softcover reprint of the original 1st ed. 2015):... Mathematical Models in Biology - Bringing Mathematics to Life (Paperback, Softcover reprint of the original 1st ed. 2015)
Valeria Zazzu, Maria Brigida Ferraro, Mario R. Guarracino
R1,597 Discovery Miles 15 970 Ships in 10 - 15 working days

This book presents an exciting collection of contributions based on the workshop "Bringing Maths to Life" held October 27-29, 2014 in Naples, Italy. The state-of-the art research in biology and the statistical and analytical challenges facing huge masses of data collection are treated in this Work. Specific topics explored in depth surround the sessions and special invited sessions of the workshop and include genetic variability via differential expression, molecular dynamics and modeling, complex biological systems viewed from quantitative models, and microscopy images processing, to name several. In depth discussions of the mathematical analysis required to extract insights from complex bodies of biological datasets, to aid development in the field novel algorithms, methods and software tools for genetic variability, molecular dynamics, and complex biological systems are presented in this book. Researchers and graduate students in biology, life science, and mathematics/statistics will find the content useful as it addresses existing challenges in identifying the gaps between mathematical modeling and biological research. The shared solutions will aid and promote further collaboration between life sciences and mathematics.

Single Variable Calculus (Paperback): Galina Filipuk, Andrzej Kozlowski Single Variable Calculus (Paperback)
Galina Filipuk, Andrzej Kozlowski
R2,066 R1,651 Discovery Miles 16 510 Save R415 (20%) Ships in 10 - 15 working days

A computer algebra system such as Mathematica (R) is able to do much more than just numerics: This text shows how to tackle real mathematical problems from basic analysis. The reader learns how Mathematica (R) represents domains, qualifiers and limits to implement actual proofs - a requirement to unlock the huge potential of Mathematica (R) for a variety of applications.

Free Delivery
Pinterest Twitter Facebook Google+
You may like...
Nagreisiger
Leon van Nierop Paperback R240 Discovery Miles 2 400
Oh Da Joy - A conversation in the art of…
Pat Jewell Hardcover R599 Discovery Miles 5 990
Cyrille's Talk
Danny Brock, Cyrille Santos Hardcover R770 R671 Discovery Miles 6 710
I Want You To Know My Glory
Merlin H Oliver Hardcover R721 Discovery Miles 7 210
Improvement of the Mind
Isaac Watts Paperback R573 Discovery Miles 5 730
The Patchwork House of Night - Hardback
Ujwal Mantha Hardcover R837 Discovery Miles 8 370
Carotenoids: Carotenoid and…
Eleanore Wurtzel Hardcover R5,550 Discovery Miles 55 500
Far From Home
Danielle Steel Hardcover R751 R594 Discovery Miles 5 940
NMR Spectroscopy in the Undergraduate…
David Soulsby, Laura J. Anna, … Hardcover R5,943 Discovery Miles 59 430
Philadelphia Phillies
Seamus Kearney, Dick Rosen Hardcover R822 R718 Discovery Miles 7 180

 

Partners