This book is a valuable compilation of topics, ranging from the basic to the most complex theories and principles in the field of library cataloguing. It delves into cataloguing with special reference to Classified Catalogue Code (CCC) and AACR-2. Cataloguing is generally done to construct solid bibliographic databases that are later fed into search engines for easy access. Understanding the science of Cataloguing is fundamental to develop deep insights into the field of Information and Library Science. The chapters in this book are compiled in a comprehensive manner to cover a range of topics varying from theory to practice. It outlines the processes and applications of this technique in detail. This textbook will serve to be an ideal reference text for those who are interested in the field of library science.