TY  - BOOK
AU  - Sing, M.P.
TI  - Information sources and services / 
T2  - Singh's Curriculum Series of Library and Information Science:-2 
SN  - 9789393631183 (hbk.)
U1  - 020 23
PY  - 2023///.
CY  - New Delhi : 
PB  - Oxford Publishers & Distributors 
ER  -