This is the revised and enlarged third edition of the book Descriptive Questions in Library and Information Science for Paper III written for NET (UGC) examination, according to the new format of questions prescribed by UGC in library and information science subject. In the present book, matter on each and every topic of the subject has been covered in detail so that the candidates appearing for the said test may have the entire matter in one place. For clear understanding of the candidates in regards to the revised format of questions of the above paper, a model has also been given in the preliminary pages of the book. This book will be beneficial for the candidates appearing not only in the NET (UGC) Test but also in SET, SLET and other similar tests in the subject of Library and Information Science.