Summary: The book examines the history, management and technical aspects of the Dewey Decimal Classification system (DDC), the world's most popular library classification. The main emphasis is on explaining the structure and number building techniques in the DDC. The book concentrates on all aspects of subject analysis and number building by the latest edition of the DDC. Key Features: Contains a brief history of the system Describes the governance, revision machinery and updating process Describes the structure of knowledge as represented in the DDC Explains the structure of the four volumes of the DDC Explains the process of subject analysis with respect to the system Explains in a graded way with numerous examples the process of number building in the DDC The Author: Dr M P Satija is a Professor of Library and Information Science in Guru Nanak Dev University, Amritsar, India. He has been writing about the DDC and other related areas in knowledge organization for the last two decades in international journals. He has collaborated with the successive two chief editors of the DDC, and is the Indian Coordinator of the International Society for Knowledge Organization. Readership: Practitioners and students of library and information science worldwide. Contents: A brief history of the DDC Layout of the DDC22 Subject analysis of documents in context of the DDC Locating simple class numbers in the DDC Number building using the schedules and internal tables Number building using each of the six tables of the DDC (a chapter on each table) Multiple synthesis using schedules and tables Order of precedence and citation order Use of the relative index Appendix Answers to exercises Glossary of terms.