TY  - BOOK
AU  - Ranganathan,S.R.
TI  - Reference service 
T2  - Ranganathan series in library science,
AV  - Z711 .R32
U1  - 025 
PY  - 1961///]
CY  - London
PB  - Asia Pub. House
KW  - Reference services (Libraries)
N1  - Revision of v. 1 of Reference service and bibliograhy, published in 1940
ER  -