TY  - BOOK
AU  - Ranganathan S R
TI  - Depth classification and reference service and reference material
U1  - 025.4 
PY  - 1953///
CY  - Delhi
PB  - Indian Library Association
KW  - Classification
KW  - Reference service
N1  - Papers for discussion at the 10th All-India Library Conference, Hyderabad, 1-4 June,1953
ER  -