0
Your cart

Your cart is empty

Browse All Departments
Price
  • R50 - R100 (6)
  • R100 - R250 (289)
  • R250 - R500 (1,701)
  • R500+ (36,029)
  • -
Status
Format
Author / Contributor
Publisher

Books > Professional & Technical > Electronics & communications engineering

Descriptor Systems of Integer and Fractional Orders (Hardcover, 1st ed. 2021): Tadeusz Kaczorek, Kamil Borawski Descriptor Systems of Integer and Fractional Orders (Hardcover, 1st ed. 2021)
Tadeusz Kaczorek, Kamil Borawski
R3,634 Discovery Miles 36 340 Ships in 10 - 15 working days

This book covers some selected problems of the descriptor integer and fractional order positive continuous-time and discrete-time systems. The book consists of 3 chapters, 4 appendices and the list of references. Chapter 1 is devoted to descriptor integer order continuous-time and discrete-time linear systems. In Chapter 2, descriptor fractional order continuous-time and discrete-time linear systems are considered. Chapter 3 is devoted to the stability of descriptor continuous-time and discrete-time systems of integer and fractional orders. In Appendix A, extensions of the Cayley-Hamilton theorem for descriptor linear systems are given. Some methods for computation of the Drazin inverse are presented in Appendix B. In Appendix C, some basic definitions and theorems on Laplace transforms and Z-transforms are given. Some properties of the nilpotent matrices are given in Appendix D.

Solid State Laser (Hardcover): Amin Al-Khursan Solid State Laser (Hardcover)
Amin Al-Khursan
R3,375 Discovery Miles 33 750 Ships in 10 - 15 working days
Industry 4.0 and Advanced Manufacturing - Proceedings of I-4AM 2019 (Hardcover, 1st ed. 2021): Amaresh Chakrabarti, Manish Arora Industry 4.0 and Advanced Manufacturing - Proceedings of I-4AM 2019 (Hardcover, 1st ed. 2021)
Amaresh Chakrabarti, Manish Arora
R7,102 Discovery Miles 71 020 Ships in 10 - 15 working days

This book presents selected papers from the 1st International Conference on Industry 4.0 and Advanced Manufacturing held at the Indian Institute of Science, Bangalore and includes deliberations from stakeholders in manufacturing and Industry 4.0 on the nature, needs, challenges, opportunities, problems, and solutions in these transformational areas. Special emphasis is placed on exploring avenues for creating a vision of, and enablers for, sustainable, affordable, and human-centric Industry 4.0. The book showcases cutting edge practice, research, and educational innovation in this crucial and rapidly evolving area. This book will be useful to researchers in academia and industry, and will also be useful to policymakers involved in creating ecosystems for implementation of Industry 4.0.

Progress in Optics, Volume 56 (Hardcover, New): Emil Wolf Progress in Optics, Volume 56 (Hardcover, New)
Emil Wolf
R5,942 Discovery Miles 59 420 Ships in 10 - 15 working days

In the50years since the first volume of "Progress in Optics" was published, optics has become one of the most dynamic fields of science. The volumes in this series that have appeared up to now contain more than 300 review articles by distinguished research workers, which have become permanent records for many important developments, helping optical scientists and optical engineers stay abreast of their fields.
Comprehensive, in-depth reviewsEdited by the leading authority in the fieldQ1 in Thomson JCR ranking"

S5000F, International specification for in-service data feedback, Issue 3.0 (Part 1/2) - S-Series 2021 Block Release... S5000F, International specification for in-service data feedback, Issue 3.0 (Part 1/2) - S-Series 2021 Block Release (Hardcover)
Asd
R1,228 Discovery Miles 12 280 Ships in 10 - 15 working days
Materials Phase Change PDE Control & Estimation - From Additive Manufacturing to Polar Ice (Hardcover, 1st ed. 2020): Shumon... Materials Phase Change PDE Control & Estimation - From Additive Manufacturing to Polar Ice (Hardcover, 1st ed. 2020)
Shumon Koga, Miroslav Krstic
R3,417 Discovery Miles 34 170 Ships in 10 - 15 working days

This monograph introduces breakthrough control algorithms for partial differential equation models with moving boundaries, the study of which is known as the Stefan problem. The algorithms can be used to improve the performance of various processes with phase changes, such as additive manufacturing. Using the authors' innovative design solutions, readers will also be equipped to apply estimation algorithms for real-world phase change dynamics, from polar ice to lithium-ion batteries. A historical treatment of the Stefan problem opens the book, situating readers in the larger context of the area. Following this, the chapters are organized into two parts. The first presents the design method and analysis of the boundary control and estimation algorithms. Part two then explores a number of applications, such as 3D printing via screw extrusion and laser sintering, and also discusses the experimental verifications conducted. A number of open problems and provided as well, offering readers multiple paths to explore in future research. Materials Phase Change PDE Control & Estimation is ideal for researchers and graduate students working on control and dynamical systems, and particularly those studying partial differential equations and moving boundaries. It will also appeal to industrial engineers and graduate students in engineering who are interested in this area.

Modern Developments in Vacuum Electron Sources (Hardcover, 1st ed. 2020): Georg Gaertner, Wolfram Knapp, Richard G. Forbes Modern Developments in Vacuum Electron Sources (Hardcover, 1st ed. 2020)
Georg Gaertner, Wolfram Knapp, Richard G. Forbes
R5,209 Discovery Miles 52 090 Ships in 10 - 15 working days

This book gives an overview of modern cathodes and electron emitters for vacuum tubes and vacuum electron devices in general. It covers the latest developments in field emission theory as well as new methods towards improving thermionic and cold cathodes. It addresses thermionic cathodes, such as oxide cathodes, impregnated and scandate cathodes, as well as photocathodes and field emitters - the latter comprising carbon nanotubes, graphene and Spindt-type emitter arrays. Despite the rise and fall of the once dominant types of vacuum tubes, such as radio valves and cathode ray tubes, cathodes are continually being improved upon as new applications with increased demands arise, for example in electron beam lithography, high-power and high-frequency microwave tubes, terahertz imaging and electron sources for accelerators. Written by 17 experts in the field, the book presents the latest developments in cathodes needed for these applications, discussing the state of the art and addressing future trends.

Control of Fuel Combustion in Boilers (Hardcover, 1st ed. 2020): Artur O. Zaporozhets Control of Fuel Combustion in Boilers (Hardcover, 1st ed. 2020)
Artur O. Zaporozhets
R3,365 Discovery Miles 33 650 Ships in 10 - 15 working days

This book examines key issues in improving the efficiency of small and medium power boiler units by adding control systems for the fuel combustion process. The original models, algorithms, software and hardware of the system developed for controlling the fuel combustion process are presented. In turn, the book presents a methodology for assessing the influence of climatic factors on the combustion process, and proposes new methods for measuring the thermophysical characteristics, which require taking into account the concentration of oxygen in the air. The system developed here was implemented on a boiler of the NIISTU-5 type, which is widely used for heat power engineering in Ukraine and other Eastern European countries. Given its scope, the book offers a valuable asset for researchers and engineers, as well as lecturers and graduate students at higher education institutions dealing with heat engineering equipment.

Dual Mode Logic - A New Paradigm for Digital IC Design (Hardcover, 1st ed. 2021): Itamar Levi, Alexander Fish Dual Mode Logic - A New Paradigm for Digital IC Design (Hardcover, 1st ed. 2021)
Itamar Levi, Alexander Fish
R2,631 Discovery Miles 26 310 Ships in 10 - 15 working days

This book presents Dual Mode Logic (DML), a new design paradigm for digital integrated circuits. DML logic gates can operate in two modes, each optimized for a different metric. Its on-the-fly switching between these operational modes at the gate, block and system levels provide maximal E-D optimization flexibility. Each highly detailed chapter has multiple illustrations showing how the DML paradigm seamlessly implements digital circuits that dissipate less energy while simultaneously improving performance and reducing area without a significant compromise in reliability. All the facets of the DML methodology are covered, starting from basic concepts, through single gate optimization, general module optimization, design trade-offs and new ways DML can be integrated into standard design flows using standard EDA tools. DML logic is compatible with numerous applications but is particularly advantageous for ultra-low power, reliable high performance systems, and advanced scaled technologies Written in language accessible to students and design engineers, each topic is oriented toward immediate application by all those interested in an alternative to CMOS logic. Describes a novel, promising alternative to conventional CMOS logic, known as Dual Mode Logic (DML), with which a single gate can be operated selectively in two modes, each optimized for a different metric (e.g., energy consumption, performance, size); Demonstrates several techniques at the architectural level, which can result in high energy savings and improved system performance; Focuses on the tradeoffs between power, area and speed including optimizations at the transistor and gate level, including alternatives to DML basic cells; Illustrates DML efficiency for a variety of VLSI applications.

Localization Algorithms and Strategies for Wireless Sensor Networks (Hardcover): Guoqiang Mao, Bari s Fidan Localization Algorithms and Strategies for Wireless Sensor Networks (Hardcover)
Guoqiang Mao, Bari s Fidan
R5,435 Discovery Miles 54 350 Ships in 10 - 15 working days

Wireless localization techniques are an area that has attracted interest from both industry and academia, with self-localization capability providing a highly desirable characteristic of wireless sensor networks. Localization Algorithms and Strategies for Wireless Sensor Networks encompasses the significant and fast growing area of wireless localization techniques. This book provides comprehensive and up-to-date coverage of topics and fundamental theories underpinning measurement techniques and localization algorithms. A useful compilation for academicians, researchers, and practitioners, this Premier Reference Source contains relevant references and the latest studies emerging out of the wireless sensor network field.

Network Security and Wireless Technology (Hardcover): Bernhard Ekman Network Security and Wireless Technology (Hardcover)
Bernhard Ekman
R3,552 R3,209 Discovery Miles 32 090 Save R343 (10%) Ships in 10 - 15 working days
Particles, Fields, Space-Time - From Thomson's Electron to Higgs' Boson (Paperback): Martin Pohl Particles, Fields, Space-Time - From Thomson's Electron to Higgs' Boson (Paperback)
Martin Pohl
R1,497 Discovery Miles 14 970 Ships in 12 - 19 working days

Short, comprehensive overview concentrating on major breakthroughs, disruptive ideas, and unexpected results Accessible to all interested in subatomic physics with little prior knowledge required Contains the latest developments in this exciting field

New Trends in Computational Electromagnetics (Hardcover): OEzgur Ergul New Trends in Computational Electromagnetics (Hardcover)
OEzgur Ergul
R4,404 R3,965 Discovery Miles 39 650 Save R439 (10%) Ships in 10 - 15 working days

Computational electromagnetics is an active research area concerned with the development and implementation of numerical methods and techniques for rigorous solutions to physical problems across the entire spectrum of electromagnetic waves - from radio frequencies to gamma rays. Numerical methods and techniques developed and implemented in this area are now used every day to solve complex problems in diverse application areas, including but not limited to antennas, telecommunications, biomedical imaging, sensing, energy harvesting, nanotechnology, and optics. The purpose of this book is to provide a broad overview of the recent efforts in computational electromagnetics to develop and implement more robust, stable, accurate, and efficient algorithms. After an extensive overview of the main trends in computational electromagnetics, individual chapters written by international experts explore the state-of-the-art in frequency-domain surface integration; frequency-domain volume integral equations; time-domain integral equations; time-domain methods for plasmonic media; finite element methods; geometric modelling and discretization for integral equations; hierarchical vector basis functions; analysis of electromagnetic fields in multilayered media; acceleration and parallelization techniques; periodic problems and determining related eigenvalues; algebraic preconditioning; high-frequency techniques and hybridizations; and uncertainty quantification for large-scale electromagnetic analysis.

Women in Microelectronics (Hardcover, 1st ed. 2020): Alice Cline Parker, Leda Lunardi Women in Microelectronics (Hardcover, 1st ed. 2020)
Alice Cline Parker, Leda Lunardi
R1,098 R932 Discovery Miles 9 320 Save R166 (15%) Ships in 10 - 15 working days

This book contains stories of women engineers' paths through the golden age of microelectronics, stemming from the invention of the transistor in 1947. These stories, like the biographies of Marie Curie and the National Geographic's stories of Jane Goodall's research that inspired the authors will inspire and guide readers along unconventional pathways to contributions to microelectronics that we can only begin to imagine. The book explores why and how the women writing here chose their career paths and how they navigated their careers. This topic is of interest to a vast audience, from students to professionals to university advisers to industry CEOs, who can imagine the advantages of a future with a diverse work force. Provides insight into women's early contributions to the field of microelectronics and celebrates the challenges they overcame; Presents compelling innovations from academia, research, and industry into advances, applications, and the future of microelectronics; Includes a fascinating look into topics such as nanotechnologies, video games, analog electronics, design automation, and neuromorphic circuits.

Radar Waveform Design based on Optimization Theory (Hardcover): Guolong Cui, Antonio Maio, Alfonso Farina, Jian Li Radar Waveform Design based on Optimization Theory (Hardcover)
Guolong Cui, Antonio Maio, Alfonso Farina, Jian Li
R3,635 R3,278 Discovery Miles 32 780 Save R357 (10%) Ships in 10 - 15 working days

This book provides an overview of radar waveform synthesis obtained as the result of computational optimization processes and covers the most challenging application fields. The book balances a practical point of view with a rigorous mathematical approach corroborated with a wealth of numerical study cases and some real experiments. Additionally, the book has a cross-disciplinary approach because it exploits cross-fertilization with the recent research and discoveries in optimization theory. The material of the book is organized into ten chapters, each one completed with a comprehensive list of references. The following topics are covered: recent advances of binary sequence designs and their applications; quadratic optimization for unimodular sequence synthesis and applications; a computational design of phase-only (possibly binary) sequences for radar systems; constrained radar code design for spectrally congested environments via quadratic optimization; robust transmit code and receive filter design for extended targets detection in clutter; optimizing radar transceiver for Doppler processing via non-convex programming; radar waveform design via the majorization-minimization framework; Lagrange programming neural network for radar waveform design; cognitive local ambiguity function shaping with spectral coexistence and experiments; and relative entropy based waveform design for MIMO radar. Targeted at an audience of radar engineers and researchers, this book provides thorough and up-to-date coverage of optimisation theory for radar waveform design.

Handbook of Research on Smart Technology Models for Business and Industry (Hardcover): J. Joshua Thomas, Ugo Fiore, Gilberto... Handbook of Research on Smart Technology Models for Business and Industry (Hardcover)
J. Joshua Thomas, Ugo Fiore, Gilberto Perez Lechuga, Valeriy Kharchenko, Pandian Vasant
R8,808 Discovery Miles 88 080 Ships in 10 - 15 working days

Advances in machine learning techniques and ever-increasing computing power has helped create a new generation of hardware and software technologies with practical applications for nearly every industry. As the progress has, in turn, excited the interest of venture investors, technology firms, and a growing number of clients, implementing intelligent automation in both physical and information systems has become a must in business. Handbook of Research on Smart Technology Models for Business and Industry is an essential reference source that discusses relevant abstract frameworks and the latest experimental research findings in theory, mathematical models, software applications, and prototypes in the area of smart technologies. Featuring research on topics such as digital security, renewable energy, and intelligence management, this book is ideally designed for machine learning specialists, industrial experts, data scientists, researchers, academicians, students, and business professionals seeking coverage on current smart technology models.

Internet of Things and M2M Communication Technologies - Architecture and Practical Design Approach to IoT in Industry 4.0... Internet of Things and M2M Communication Technologies - Architecture and Practical Design Approach to IoT in Industry 4.0 (Hardcover, 1st ed. 2021)
Veena S Chakravarthi
R3,401 Discovery Miles 34 010 Ships in 10 - 15 working days

This book provides readers with a 360-degree perspective on the Internet of Things (IoT) design and M2M communication process. It is intended to be used as a design guide for the development of IoT solutions, covering architecture, design, and development methods. This book examines applications such as industry automation for Industry 4.0, Internet of Medical Things (IoMT), and Internet of Services (IoS) as it is unfolding. Discussions on engineering fundamentals are limited to what is required for the realization of IoT solutions. Internet of Things and M2M Communication Technologies: Architecture and Practical Design Approach to IoT in Industry 4.0 is written by an industry veteran with more than 30 years of hands-on experience. It is an invaluable guide for electrical, electronic, computer science, and information science engineers who aspire to be IoT designers and an authoritative reference for practicing designers working on IoT device development. Provides complete design approach to develop IoT solutions; Includes reference designs and guidance on relevant standards compliance; Addresses design for manufacturability and business models.

Technology Mapping for LUT-Based FPGA (Hardcover, 1st ed. 2021): Marcin Kubica, Adam Opara, Dariusz Kania Technology Mapping for LUT-Based FPGA (Hardcover, 1st ed. 2021)
Marcin Kubica, Adam Opara, Dariusz Kania
R2,882 Discovery Miles 28 820 Ships in 10 - 15 working days

This book covers selected topics of automated logic synthesis dedicated to FPGAs. The authors focused on two main problems: decomposition of the multioutput functions and technology mapping. Additionally, the idea of using binary decision diagrams (BDD) in these processes was presented. The book is a scientific monograph summarizing the authors' many years of research. As a result, it contains a large number of experimental results, which makes it a valuable source for other researchers. The book has a significant didactic value. Its arrangement allows for a gradual transition from basic things (e.g., description of logic functions) to much more complex issues. This approach allows less advanced readers to better understand the described problems. In addition, the authors made sure that the issues described in the book were supported by practical examples, thanks to which the reader can independently analyze even the most complex problems described in the book.

OFDM for Optical Communications (Hardcover): William Shieh, Ivan B. Djordjevic OFDM for Optical Communications (Hardcover)
William Shieh, Ivan B. Djordjevic
R3,872 R2,678 Discovery Miles 26 780 Save R1,194 (31%) Ships in 12 - 19 working days

The first book on optical OFDM by the leading pioneers in the fieldThe only book to cover error correction codes for optical OFDMGives applications of OFDM to free-space communications, optical access networks, and metro and log haul transports show optical OFDM can be implementedContains introductions to signal processing for optical engineers and optical communication fundamentals for wireless engineers

This book gives a coherent and comprehensive introduction to the fundamentals of OFDM signal processing, with a distinctive focus on its broad range of applications. It evaluates the architecture, design and performance of a number of OFDM variations, discusses coded OFDM, and gives a detailed study of error correction codes for access networks, 100 Gb/s Ethernet and future optical networks.

The emerging applications of optical OFDM, including single-mode fiber transmission, multimode fiber transmission, free space optical systems, and optical access networks are examined, with particular attention paid to passive optical networks, radio-over-fiber, WiMAX and UWB communications.

Written by two of the leading contributors to the field, this book will be a unique reference for optical communications engineers and scientists. Students, technical managers and telecom executives seeking to understand this new technology for future-generation optical networks will find the book invaluable.

William Shieh is an associate professor and reader in the electrical and electronic engineering department, The University of Melbourne, Australia. He received his M.S. degree in electrical engineering and Ph.D. degree in physics both from University of Southern California.

Ivan Djordjevic is an Assistant Professor of Electrical and Computer Engineering at the University of Arizona, Tucson, where he directs the Optical Communications Systems Laboratory (OCSL). His current research interests include optical networks, error control coding, constrained coding, coded modulation, turbo equalization, OFDM applications, and quantum error correction.

"This wonderful book is the first one to address the rapidly emerging optical OFDM field. Written by two leading researchers in the field, the book is structured to comprehensively cover any optical OFDM aspect one could possibly think of, from the most fundamental to the most specialized. The book adopts a coherent line of presentation, while striking a thoughtful balance between the various topics, gradually developing the optical-physics and communication-theoretic concepts required for deep comprehension of the topic, eventually treating the multiple optical OFDM methods, variations and applications. In my view this book will remain relevant for many years to come, and will be increasingly accessed by graduate students, accomplished researchers as well as telecommunication engineers and managers keen to attain a perspective on the emerging role of OFDM in the evolution of photonic networks." -- "Prof.Moshe Nazarathy, EE Dept., Technion, Israel Institute of Technology"
* The first book on optical OFDM by the leading pioneers in the field
* The only book to cover error correction codes for optical OFDM
* Applications of OFDM to free-space communications, optical access networks, and metro and log haul transports show optical OFDM can be implemented
* An introduction to signal processing for optical communications
* An introduction to optical communication fundamentals for the wireless engineer"

Theoretical, Modelling and Numerical Simulations Toward Industry 4.0 (Hardcover, 1st ed. 2021): Samsul Ariffin Abdul Karim Theoretical, Modelling and Numerical Simulations Toward Industry 4.0 (Hardcover, 1st ed. 2021)
Samsul Ariffin Abdul Karim
R2,873 Discovery Miles 28 730 Ships in 10 - 15 working days

This book presents theoretical modeling and numerical simulations applied to drive several applications towards Industrial Revolution 4.0 (IR 4.0). The topics discussed range from theoretical parts to extensive simulations involving many efficient algorithms as well as various statistical techniques. This book is suitable for postgraduate students, researchers as well as other scientists who are working in mathematics, statistics and numerical modeling and simulation.

Modern Mechanics and Robotics (Hardcover): Jared Kroff Modern Mechanics and Robotics (Hardcover)
Jared Kroff
R3,570 R3,227 Discovery Miles 32 270 Save R343 (10%) Ships in 10 - 15 working days
NextGen Network Synchronization (Hardcover, 1st ed. 2021): Dhiman Deb Chowdhury NextGen Network Synchronization (Hardcover, 1st ed. 2021)
Dhiman Deb Chowdhury
R2,871 Discovery Miles 28 710 Ships in 12 - 19 working days

This book presents time synchronization and its essential role as a conduit of optimized networks and as one of the key imperatives of ubiquitous connectivity. The author discusses how, without proper time synchronization, many mission critical infrastructures such as 5G mobile networks, smart grids, data centres CATV, and industrial networks would render in serious performance issues and may be subject to catastrophic failure. The book provides a thorough understanding of time synchronization from fundamental concepts to the application of time synchronization in NextGen mission critical infrastructure. Readers will find information not only on designing the optimized products for mission critical infrastructure but also on building NextGen mission critical infrastructure.

Hamshack Raspberry Pi - How to Use the Raspberry Pi for Amateur Radio Activities (Hardcover): James Baughn K9eoh Hamshack Raspberry Pi - How to Use the Raspberry Pi for Amateur Radio Activities (Hardcover)
James Baughn K9eoh
R687 Discovery Miles 6 870 Ships in 12 - 19 working days
Advances in Imaging and Electron Physics, Volume 157 - Optics of Charged Particle Analyzers (Hardcover, 157th edition): Peter... Advances in Imaging and Electron Physics, Volume 157 - Optics of Charged Particle Analyzers (Hardcover, 157th edition)
Peter W. Hawkes
R7,467 R6,244 Discovery Miles 62 440 Save R1,223 (16%) Ships in 12 - 19 working days

"Advances in Imaging and Electron Physics " merges two long-running serials--"Advances in Electronics and Electron Physics" and "Advances in Optical and Electron Microscopy."
This series features extended articles on the physics of electron devices (especially semiconductor devices), particle optics at high and low energies, microlithography, image science and digital image processing, electromagnetic wave propagation, electron microscopy, and the computing methods used in all these domains.
* Contributions from leading international scholars and industry experts
* Discusses hot topic areas and presents current and future research trends
* Invaluable reference and guide for physicists, engineers and mathematicians

Advances in Motor Torque Control (Hardcover): Mukhtar Ahmad Advances in Motor Torque Control (Hardcover)
Mukhtar Ahmad
R3,335 Discovery Miles 33 350 Ships in 10 - 15 working days
Free Delivery
Pinterest Twitter Facebook Google+
You may like...
Machine Learning in Medicine - A…
Ton J. Cleophas, Aeilko H. Zwinderman Hardcover R3,948 Discovery Miles 39 480
Multiphoton Microscopy and Fluorescence…
Karsten Koenig Hardcover R4,637 Discovery Miles 46 370
Specious Science - How Genetics and…
C.Ray Greek, Jean Swingle Greek Hardcover R2,183 Discovery Miles 21 830
Quality Assurance Management - A…
Gayathri De Lanerolle, Evette Sebastien Roberts, … Paperback R2,900 R2,633 Discovery Miles 26 330
The Sourcebook for Clinical Research - A…
Natasha Martien, Jeff Nelligan Paperback R2,194 Discovery Miles 21 940
Animal Models for Medications Screening…
Richard L. Bell, Shafiqurrahman Hardcover R5,761 R4,828 Discovery Miles 48 280
Moral Entanglements - The Ancillary-Care…
Henry S. Richardson Hardcover R2,083 Discovery Miles 20 830
Modern Statistical Methods for Health…
Yichuan Zhao, (Din) Ding-Geng Chen Hardcover R3,928 Discovery Miles 39 280
Epi-Informatics - Discovery and…
Jose Medina-Franco Paperback R3,052 Discovery Miles 30 520
Developments in Statistical Evaluation…
Kees Van Montfort, Johan Oud, … Hardcover R2,927 Discovery Miles 29 270

 

Partners