The book, Library and Information Science covers paper II and III of the UGC-NET/JRF conducted by UGC for lectureship and research fellowship in Indian universities in this subject. It contains eleven chapters covering the prescribed syllabus for UGC-NET/JRF in Library & Information Science. Each chapter has two sections. In the first section, an introduction with important points to be remembered regarding the concepts of the topics covered in the chapter has been given. The second section of the chapter contains multiple choice questions with answers. The book contains more than 2500 multiple choice questions, including questions based on matching, assertion and reason, etc. An Appendix has also been provided which covers Abbreviations, Abstracts, Index and Thesaurus, Catalogue Codes and their inventors, Classification Schemes and their inventors, Citation Manual, famous persons related to Library & Information Science, ICT Tools, Computer Language Developers, Indexing Systems, List of Library Associations, Public Library Act, etc. The book will be useful for the students preparing for UGC-NET/JRF and SLET in Library & Information Science. It will also be useful for institutions like KVS, NVS, DRDO, and professionals like Assistant Librarians, Information Scientists, etc.