TY  - BOOK
AU  - Ranganathan, R.N
TI  - Reference service
T2  - Ranganathan series in library science, 8
SN  - 8170004659
U1  - 025.52 
PY  - 1940///
CY  - Newdelhi
PB  - Ess Ess Publications
KW  - Reference services (Libraries) Bibliotheques
KW  - Services de reference
ER  -