Dhyani, Pushpa. Library classification : theory and principles / by Pushpa Dhyani. - New Delhi : Wishwa Prakashan , 1998. - v,381p. : ill.,tables ; 23cm . Includes references and index ISBN: 8173280894 Rs. 450.00 Subjects--Index Terms: CLASSIFICATION Dewey Class. No.: 020.42 / DHY/L