TY  - BOOK
AU  - Ranganathan, S.R. 
TI  - Depth classification and reference service & reference material: papers for discussion at the tenth All-India Library Confrence, Hyderabad, 1-4 June 1953 
U1  - 020 
PY  - 1953///
CY  - Delhi
PB  - Indian Library association
N1  - includes bibliographical references and index
ER  -