Synopsis The Library Classification is a system of coding and organizing library materials according to their subject. As a process, classification involves the orderly and systematic assignment of each entity to one and only one class within a system of mutually exclusive and non-overlapping classes. This is many standard systems of library classification in use, and many more have been proposed over the years. The nature purpose and latest developments in library classification are discussed in this book elaborately. The concepts and principles of all major classification system are also described. This up-to-date and comprehensive book will be an invaluable reference material for students, professionals and researchers of library and information researchers of library and information science.