0
Your cart

Your cart is empty

Browse All Departments
Price
  • R100 - R250 (9)
  • R250 - R500 (111)
  • R500+ (11,547)
  • -
Status
Format
Author / Contributor
Publisher

Books > Professional & Technical > Mechanical engineering & materials > Materials science > General

Modeling of Chemical Wear - Relevance to Practice (Paperback): A. Sethuramiah, Rajesh Kumar Modeling of Chemical Wear - Relevance to Practice (Paperback)
A. Sethuramiah, Rajesh Kumar
R1,807 Discovery Miles 18 070 Ships in 10 - 15 working days

Modeling of Chemical Wear is a one-stop resource for students, researchers and professionals seeking quick and effective tribological evaluations of environmentally friendly and energy efficient products. This book considers optimizing additive combinations by proper methodology, bridging the gap between theory and practice. It defines effective approaches to evaluate antiwear chemical additives commonly used in industry, enhancing the mapping ability of their performance to reduce the extent of full scale evaluations.

Electronic Structure of Organic Semiconductors - Polymers and Small Molecules (Hardcover): Luis Alcacer Electronic Structure of Organic Semiconductors - Polymers and Small Molecules (Hardcover)
Luis Alcacer
R1,838 Discovery Miles 18 380 Ships in 18 - 22 working days

Written in the perspective of an experimental chemist, this book puts together some fundamentals from chemistry, solid state physics and quantum chemistry, to help with understanding and predicting the electronic and optical properties of organic semiconductors, both polymers and small molecules. The text is intended to assist graduate students and researchers in the field of organic electronics to use theory to design more efficient materials for organic electronic devices such as organic solar cells, light emitting diodes and field effect transistors. After addressing some basic topics in solid state physics, a comprehensive introduction to molecular orbitals and band theory leads to a description of computational methods based on Hartree-Fock and density functional theory (DFT), for predicting geometry conformations, frontier levels and energy band structures. Topological defects and transport and optical properties are then addressed, and one of the most commonly used transparent conducting polymers, PEDOT:PSS, is described in some detail as a case study.

Fluorinated Coatings and Finishes Handbook - The Definitive User's Guide (Hardcover, 2nd edition): Laurence W McKeen Fluorinated Coatings and Finishes Handbook - The Definitive User's Guide (Hardcover, 2nd edition)
Laurence W McKeen
R6,620 Discovery Miles 66 200 Ships in 10 - 15 working days

Fluorinated Coatings and Finishes Handbook: The Definitive User's Guide, Second Edition, addresses important, frequently posed questions by end-user design engineers, coaters, and coatings suppliers on fluorinated coatings and finishes, thus enabling them to achieve superior product qualities and shorter product and process development times. The book provides broad coverage of these fluorinated polymer coatings, including the best known PTFE, polytetrafluoroethylene, first trademarked as Teflon (R) and ePTFE (GoreTex (R)). Their inherent qualities of low surface tension, non-stick, low friction, high melting point, and chemical inertness make fluoropolymer coatings widely desirable across thousands of industrial and consumer applications, but these properties also make it difficult to convert fluoropolymers to coatings that have sufficient adhesion to the substrate to be protected. In this book, readers learn how fluoropolymer coatings are used and made, about their pigments and fillers, binders, dispersion processes, additives, and solvents. The book includes substrate preparation, coating properties, baking and curing processes, performance tests, applications, and health and safety.

Nanotechnology-Enhanced Orthopedic Materials - Fabrications, Applications and Future Trends (Hardcover): Lei Yang Nanotechnology-Enhanced Orthopedic Materials - Fabrications, Applications and Future Trends (Hardcover)
Lei Yang
R3,755 R3,500 Discovery Miles 35 000 Save R255 (7%) Ships in 10 - 15 working days

Nanotechnology-Enhanced Orthopedic Materials provides the latest information on the emergence and rapid development of nanotechnology and the ways it has impacted almost every aspect of biomedical engineering. This book provides readers with a comprehensive overview of the field, focusing on the fabrication and applications of these materials, presenting updated, practical, and systematic knowledge on the synthesis, processing, and modification of nanomaterials, along with the rationale and methodology of applying such materials for orthopedic purposes. Topics covered include a wide range of orthopedic material formulations, such as ceramics, metals, polymers, biomolecules, and self-assemblies. Final sections explore applications and future trends in nanotechnology-enhanced orthopedic materials.

Wood Composites (Hardcover): Martin Ansell Wood Composites (Hardcover)
Martin Ansell
R4,550 Discovery Miles 45 500 Ships in 10 - 15 working days

Recent progress in enhancing and refining the performance and properties of wood composites by chemical and thermal modification and the application of smart multi-functional coatings have made them a particular area of interest for researchers. Wood Composites comprehensively reviews the whole field of wood composites, with particular focus on their materials, applications and engineering and scientific advances, including solutions inspired biomimetrically by the structure of wood and wood composites. Part One covers the materials used for wood composites and examines wood microstructure, and wood processing and adhesives for wood composites. Part Two explores the many applications of wood composites, for example plywood, fibreboard, chipboard, glulam, cross-laminated timber, I-beams and wood-polymer composites. The final part investigates advances in wood composites and looks at the preservation and modification of wood composites, environmental impacts and legislative obligations, nano-coatings and plasma treatment, biomimetic composite materials, the integration of wood composites with other materials and carbonized and mineralized wood composites.

UHMWPE Biomaterials Handbook - Ultra High Molecular Weight Polyethylene in Total Joint Replacement and Medical Devices... UHMWPE Biomaterials Handbook - Ultra High Molecular Weight Polyethylene in Total Joint Replacement and Medical Devices (Hardcover, 3rd edition)
Steven M Kurtz
R3,827 Discovery Miles 38 270 Ships in 10 - 15 working days

UHMWPE Biomaterials Handbook, Third Edition, describes the science, development, properties, and application of ultra-high molecular weight polyethylene (UHMWPE) used in artificial joints. UHMWPE is now the material of choice for joint replacements, and is increasingly being used in fibers for sutures. This book is a one-stop reference for information on this advanced material, covering both introductory topics and the most advanced developments. The third edition adds six new chapters on a range of topics, including the latest in anti-oxidant technologies for stabilizing HXLPE and up-to-date systematic reviews of the clinical literature for HXLPE in hips and knees. The book chronicles the rise and fall of all-metal hip implants, as well as the increased use of ceramic biomaterials and UHMWPE for this application. This book also brings orthopedic researchers and practitioners up to date on the stabilization of UHMWPE with antioxidants, as well as the choices of antioxidant available for practitioners. The book also thoroughly assesses the clinical performance of HXLPE, as well as alternative bearings in knee replacement and UHMWPE articulations with polyether ether ketone (PEEK). Written and edited by the top experts in the field of UHMWPE, this is the only state-of-the-art reference for professionals, researchers, and clinicians working with this material.

Mechanical Alloying - Nanotechnology, Materials Science and Powder Metallurgy (Hardcover, 2nd edition): M.Sherif El-Eskandarany Mechanical Alloying - Nanotechnology, Materials Science and Powder Metallurgy (Hardcover, 2nd edition)
M.Sherif El-Eskandarany
R4,302 R3,865 Discovery Miles 38 650 Save R437 (10%) Ships in 10 - 15 working days

This book is a detailed introduction to mechanical alloying, offering guidelines on the necessary equipment and facilities needed to carry out the process and giving a fundamental background to the reactions taking place. El-Eskandarany, a leading authority on mechanical alloying, discusses the mechanism of powder consolidations using different powder compaction processes. A new chapter will also be included on thermal, mechanically-induced and electrical discharge-assisted mechanical milling.

Fully updated to cover recent developments in the field, this second edition also introduces new and emerging applications for mechanical alloying, including the fabrication of carbon nanotubes, surface protective coating and hydrogen storage technology. El-Eskandarany discusses the latest research into these applications, and provides engineers and scientists with the information they need to implement these developments. The industrial applications of nanocrystalline and metallic glassy powders are presented.

The book also contains over 200 tables and graphs to illustrate the milling processes and present the properties and characteristics of the resulting materials.
Guides readers through each step of the mechanical alloying process, covering best practice techniques and offering guidelines on the required equipment.

Tables and graphs are used to explain the stages of the milling processes and provide an understanding of the properties and characteristics of the resulting materials.

A comprehensive update on the previous edition, including new chapters to cover new applications.

Handbook of Specialty Fluorinated Polymers - Preparation, Properties, and Applications (Hardcover): Susanta Banerjee Handbook of Specialty Fluorinated Polymers - Preparation, Properties, and Applications (Hardcover)
Susanta Banerjee
R4,420 Discovery Miles 44 200 Ships in 10 - 15 working days

Fluoropolymers are used in applications demanding service at enhanced temperature while maintaining their structural integrity and have excellent combination of chemical, physical and mechanical properties. Advancements in materials and processing technology mean that a huge amount of research is currently taking place into new, high performance applications for specialty fluorinated polymers. This book is a complete review of the current research in synthesizing new fluorinated high performance polymers and their application in the field of low dielectric constant materials, membrane based separation (gas and liquid) and proton exchange membranes. Special emphasis is given to the preparation of soluble high performance polymers by incorporating fluorine and different structural elements so as to use these classes of polymers in different membrane based applications, including low dielectric constant materials, gas separation, pervaporation, proton exchange membranes in fuel cells, and more. The coverage of processing properties and commercial aspects - as well as a practical assessment of the advantages and disadvantages of specialty fluoropolymers compared to other materials - enables engineers and product designers to apply the latest scientific developments in this area in a practical setting.

Recent Advances in Smart Self-healing Polymers and Composites (Hardcover): Guoqiang Li Recent Advances in Smart Self-healing Polymers and Composites (Hardcover)
Guoqiang Li
R4,391 Discovery Miles 43 910 Ships in 10 - 15 working days

Recent Advances in Smart Self-Healing Polymers and Composites examines the advances made in smart materials over the last few decades and their significant applications in aerospace, automotive, civil, mechanical, medical, and communication engineering fields. Based on a thorough review of the literature, the book identifies "smart self-healing polymers and composites" as one of the most popular, challenging, and promising areas of research. Readers will find valuable information compiled by a large pool of researchers who not only studied the latest datasets, but also reached out to leading contributors for insights and forward-thinking analogies.

Hydroxyapatite (HAp) for Biomedical Applications (Hardcover): Michael Mucalo Hydroxyapatite (HAp) for Biomedical Applications (Hardcover)
Michael Mucalo
R4,660 Discovery Miles 46 600 Ships in 10 - 15 working days

Hydroxyapatite in the form of hydroxycarbonate apatite is the principal mineral component of bone tissue in mammals. In Bioceramics, it is classed as a bioactive material, which means bone tissue grows directly on it when placed in apposition without intervening fibrous tissue. Hydroxyapatite is hence commonly used as bone grafts, fillers and as coatings for metal implants. This important book provides an overview of the most recent research and developments involving hydroxyapatite as a key material in medicine and its application.

Toughening Mechanisms in Composite Materials (Paperback): Qing-Hua Qin, Jianqiao Ye Toughening Mechanisms in Composite Materials (Paperback)
Qing-Hua Qin, Jianqiao Ye
R4,660 Discovery Miles 46 600 Ships in 10 - 15 working days

Toughening Mechanisms in Composite Materials aims to provide a comprehensive and technically detailed coverage of composites and their toughening mechanisms. Unique in its direct and comprehensive approach, the book presents fundamental knowledge on composites' toughening mechanisms as well as a comprehensive treatment of numerical methods. This volume summarizes the current state-of-the-art and presents the most recent research outcomes in the field. It details the development of each of the techniques, beginning with basic principles, and new concepts are illustrated with examples wherever possible.

Microsystems for Bioelectronics - Scaling and Performance Limits (Hardcover, 2nd edition): Victor V. Zhirnov, Ralph K. Cavin III Microsystems for Bioelectronics - Scaling and Performance Limits (Hardcover, 2nd edition)
Victor V. Zhirnov, Ralph K. Cavin III
R3,798 Discovery Miles 37 980 Ships in 10 - 15 working days

The advances in microsystems offer new opportunities and capabilities to develop systems for biomedical applications, such as diagnostics and therapy. There is a need for a comprehensive treatment of microsystems and in particular for an understanding of performance limits associated with the shrinking scale of microsystems. The new edition of Microsystems for Bioelectronics addresses those needs and represents a major revision, expansion and advancement of the previous edition. This book considers physical principles and trends in extremely scaled autonomous microsystems such as integrated intelligent sensor systems, with a focus on energy minimization. It explores the implications of energy minimization on device and system architecture. It further details behavior of electronic components and its implications on system-level scaling and performance limits. In particular, fundamental scaling limits for energy sourcing, sensing, memory, computation and communication subsystems are developed and new applications such as optical, magnetic and mechanical sensors are presented. The new edition of this well-proven book with its unique focus and interdisciplinary approach shows the complexities of the next generation of nanoelectronic microsystems in a simple and illuminating view, and is aimed for a broad audience within the engineering and biomedical community.

Introduction to Strain–Based Structural Health Monitoring of Civil Structures (Hardcover): Branko Glisic Introduction to Strain–Based Structural Health Monitoring of Civil Structures (Hardcover)
Branko Glisic
R2,231 Discovery Miles 22 310 Ships in 10 - 15 working days

A comprehensive introduction to strain-based structural health monitoring of civil structures, with focus on measurement and data analysis Introduction to Strain-Based Structural Health Monitoring of Civil Structures focuses on the SHM of Civil Structures and Infrastructure, and develops the relevant topics of measurement and data analysis from a fundamental to advanced level. The book contains an overview of the available and emerging monitoring technologies, for example, traditional strain-gauges, fiber optic sensors, and large area electronics. The fundamental criteria for applications of SHM technologies on concrete, steel and composite materials are also discussed, and both basic and advanced data interpretation and analysis for static and dynamic monitoring are presented in detail. Methods applicable to a large spectrum of civil structures such as bridges, buildings, and geo-structures are summarized. These methods are illustrated with practical examples. Key features: * Introduces strain-based structural health monitoring of civil structures, with focus on measurement and data analysis. * Contains the basic strain-based SHM methods for monitoring various types of structures. * Covers the physical principles, advantages and limitations of various types of sensors. * Covers the sources of static and dynamic strain, and how to interpret the strain measurement. * Includes basic and advanced methods for static and dynamic data analysis. * Explores the potential and benefits as well as the limitations of SHM. * Suitable as a guide for practicing engineers, reference for infrastructure owners, and textbook for researchers and SHM university courses. Introduction to Strain-Based Structural Health Monitoring of Civil Structures is essential, state-of-the-art reading for civil and structural engineers and professionals in SHM, as well as teachers, researchers and students in civil engineering.

Silicon-Based Polymers and Materials (Hardcover): Jerzy J. Chrusciel Silicon-Based Polymers and Materials (Hardcover)
Jerzy J. Chrusciel
R5,158 Discovery Miles 51 580 Ships in 18 - 22 working days

Silicon based materials and polymers are made of silicon containing polymers, mainly macromolecular siloxanes (silicones). This book covers the different kinds of siliconbased polymers: silicones, silsesquioxanes (POSS), and silicon-based copolymers. Other silicon containig polymers: polycarbosilanes, polysilazanes, siloxane-organic copolymers, silicon derived high-tech ceramics: silicon carbide and oxycarbide, silicon nitride, etc. have also a very important practical meaning and a hudge number of practical applications. These materials make up products in a variety of industries and products, including technical and medical applicatons. Polycrystalline silicon is the basic material for large scale photovoltaic (PV) applications as solar cells. Technical applications of crystalline (c-Si) and amorphous (a-Si) silicon (fully inorganic materials), silicon nanowires are still quickly growing, especially in the fi eld of microelectronics, optoelectronics, photonics. and photovoltaics, catalysts, and different electronic devices (e.g. sensors, thermoelectric devices). This book is ideal for researchers and as such covers the industrial perspective of using each class of silicon based materials. Discusses silanes, silane coupling agents (SCA), silica, silicates, silane modified fillers, silsesquioxanes, silicones, and other silicon polymers and copolymers for practical applications as polymeric materials and very useful ingredients in materials science.

Nano-Glass Ceramics - Processing, Properties and Applications (Hardcover): Vahak Marghussian Nano-Glass Ceramics - Processing, Properties and Applications (Hardcover)
Vahak Marghussian
R3,292 R3,054 Discovery Miles 30 540 Save R238 (7%) Ships in 10 - 15 working days

Nano-Glass Ceramics: Processing, Properties and Applications provides comprehensive coverage of synthesis and processing methods, properties and applications of the most important types of nano-glass ceramics, from a unique material science perspective. Emphasis is placed on the experimental and practical aspects of the subject while covering the theoretical and practical aspects and presenting, numerous examples and details of experimental methods. In the discussing the many varied applications of nano-glass ceramics, consideration is given to both, the fields of applications in which the materials are firmly established and the fields where great promise exists for their future exploitation. The methods of investigation adopted by researchers in the various stages of synthesis, nucleation, processing and characterization of glass ceramics are discussed with a focus on the more novel methods and the state of the art in developing nanostructured glass ceramics.

PVC Degradation and Stabilization (Hardcover, 3rd edition): George Wypych PVC Degradation and Stabilization (Hardcover, 3rd edition)
George Wypych
R5,413 R5,046 Discovery Miles 50 460 Save R367 (7%) Ships in 10 - 15 working days

PVC stabilization, the most important aspect of formulation and performance of this polymer, is discussed in details. This book contains all information required to design successful stabilization formula for any product made out of PVC. Separate chapters review information on chemical structure, PVC manufacturing technology, morphology, degradation by thermal energy, UV, gamma, other forms of radiation, mechanodegradation, and chemical degradation. The chapter on analytical methods used in studying of degradative and stabilization processes helps in establishing system of checking results of stabilization with different stabilizing systems. Stabilization and stabilizers are discussed in full detail in the most important chapter of this book. The final chapter contains information on the effects of PVC and its additives on health, safety and environment. This book contains analysis of all essential papers and patents published until recently on the above subject. It either locates the answers to relevant questions and offers solutions or gives references in which such answers can be found. PVC Degradation and Stabilization is must to have for chemists, engineers, scientists, university teachers and students, designers, material scientists, environmental chemists, and lawyers who work with polyvinyl chloride and its additives or have any interest in these products. This book is the one authoritative source on the subject.

Corrosion Engineering - Principles and Solved Problems (Hardcover): Branko N Popov Corrosion Engineering - Principles and Solved Problems (Hardcover)
Branko N Popov
R3,956 R3,626 Discovery Miles 36 260 Save R330 (8%) Ships in 10 - 15 working days

Corrosion Engineering: Principles and Solved Problems covers corrosion engineering through an extensive theoretical description of the principles of corrosion theory, passivity and corrosion prevention strategies and design of corrosion protection systems. The book is updated with results published in papers and reviews in the last twenty years. Solved corrosion case studies, corrosion analysis and solved corrosion problems in the book are presented to help the reader to understand the corrosion fundamental principles from thermodynamics and electrochemical kinetics, the mechanism that triggers the corrosion processes at the metal interface and how to control or inhibit the corrosion rates. The book covers the multidisciplinary nature of corrosion engineering through topics from electrochemistry, thermodynamics, mechanical, bioengineering and civil engineering.

Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials, VOL 3 (Hardcover): Information R... Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials, VOL 3 (Hardcover)
Information R Management Association
R14,511 Discovery Miles 145 110 Ships in 18 - 22 working days
Unified Non-Local Theory of Transport Processes - Generalized Boltzmann Physical Kinetics (Hardcover, 2nd edition): Boris V... Unified Non-Local Theory of Transport Processes - Generalized Boltzmann Physical Kinetics (Hardcover, 2nd edition)
Boris V Alexeev
R4,884 R4,534 Discovery Miles 45 340 Save R350 (7%) Ships in 10 - 15 working days

Unified Non-Local Theory of Transport Processess, 2nd Edition provides a new theory of transport processes in gases, plasmas and liquids. It is shown that the well-known Boltzmann equation, which is the basis of the classical kinetic theory, is incorrect in the definite sense. Additional terms need to be added leading to a dramatic change in transport theory. The result is a strict theory of turbulence and the possibility to calculate turbulent flows from the first principles of physics.

Hyperbolic Metamaterials (Hardcover): Igor I. Smolyaninov Hyperbolic Metamaterials (Hardcover)
Igor I. Smolyaninov
R1,587 Discovery Miles 15 870 Ships in 18 - 22 working days

Hyperbolic metamaterials were originally introduced to overcome the diffraction limit of optical imaging. Soon thereafter it was realized that hyperbolic metamaterials demonstrate a number of novel phenomena resulting from the broadband singular behavior of their density of photonic states. These novel phenomena and applications include super resolution imaging, new stealth technologies, enhanced quantum-electrodynamic effects, thermal hyperconductivity, superconductivity, and interesting gravitation theory analogs. Here I review typical material systems, which exhibit hyperbolic behavior and outline important new applications of hyperbolic metamaterials, such as imaging experiments with plasmonic hyperbolic metamaterials and novel VCSEL geometries, in which the Bragg mirrors may be engineered in such a way that they exhibit hyperbolic properties in the long wavelength infrared range, so that they may be used to efficiently remove excess heat from the laser cavity. I will also discuss potential applications of self-assembled photonic hypercrystals. This system bypasses 3D nanofabrication issues, which typically limit hyperbolic metamaterial applications. Photonic hypercrystals combine the most interesting features of hyperbolic metamaterials and photonic crystals.

Concepts and Applications of Polycrystalline Materials (Hardcover): Sharon Levine Concepts and Applications of Polycrystalline Materials (Hardcover)
Sharon Levine
R1,803 Discovery Miles 18 030 Ships in 10 - 15 working days
Handbook of Material Biodegradation, Biodeterioration, and Biostablization (Hardcover, 2nd edition): Michalina... Handbook of Material Biodegradation, Biodeterioration, and Biostablization (Hardcover, 2nd edition)
Michalina Falkiewicz-Dulik, Katarzyna Janda, George Wypych
R4,944 Discovery Miles 49 440 Ships in 10 - 15 working days

Handbook of Material Biodegradation, Biodeterioration, and Biostabilization, Second Edition gives extensive information on the microorganisms involved in the biodegradation of materials, along with the biocides which are permitted for use according to the most up-to-date worldwide legislation. Mechanisms of biodegradation and biodeterioration, results of biodeterioration, and methods of biostabilization are covered for a large number of products, making the title relevant for a range of industries and applications, including construction, coatings/paints, medical and pharmaceutical applications, and electronics. In addition, the health and safety aspects of biocide application are covered in detail, as well as the personal protection of practitioners who are required to use them. The contents and the most-up-to-date information make this book essential for almost all the fields of applied chemistry.

Coatings: Science and Engineering (Hardcover): Falicia Radcliff Coatings: Science and Engineering (Hardcover)
Falicia Radcliff
R3,167 R2,870 Discovery Miles 28 700 Save R297 (9%) Ships in 18 - 22 working days
Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials, VOL 1 (Hardcover): Information R... Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials, VOL 1 (Hardcover)
Information R Management Association
R14,507 Discovery Miles 145 070 Ships in 18 - 22 working days
Advances in Microporous and Mesoporous Materials (Hardcover): Rafael Huirache Acuna Advances in Microporous and Mesoporous Materials (Hardcover)
Rafael Huirache Acuna
R3,057 Discovery Miles 30 570 Ships in 18 - 22 working days
Free Delivery
Pinterest Twitter Facebook Google+
You may like...
Surface Metrology for Micro- and…
Wei Gao Paperback R4,387 Discovery Miles 43 870
Handbook of Thermoset Plastics
Hanna Dodiuk Paperback R5,942 Discovery Miles 59 420
Moulding for Profit - The Injection…
Clare Goldsberry Hardcover R2,448 Discovery Miles 24 480
Definitions of Biomaterials for the…
Xingdong Zhang, David Williams Paperback R2,164 Discovery Miles 21 640
Electrofluidodynamic Technologies…
Vincenzo Guarino, Luigi Ambrosio Hardcover R5,304 Discovery Miles 53 040
Electrospinning: Nanofabrication and…
Binding, Xianfeng Wang, … Paperback R3,671 Discovery Miles 36 710
Comprehensive Structural Integrity
Ferri M.H. Aliabadi, Winston (Wole) Soboyejo Hardcover R99,774 Discovery Miles 997 740
Nanofluid Applications for Advanced…
Shriram S. Sonawane, Mohsen Sharifpur Paperback R3,922 Discovery Miles 39 220
Advances in Structural Adhesive Bonding
D. Dillard Paperback R6,793 Discovery Miles 67 930
Encyclopedia of Nanomaterials
Younan Xia, Yadong Yin Hardcover R56,960 Discovery Miles 569 600

 

Partners