TY  - BOOK
AU  -  Biswal, Kalpataru
TI  - OPSC General Studies: State Civil Services Examination Preliminary Paper 1 &2
SN  - 9789384409425
U1  - 000 
PY  - 2023///
CY  - New Delhi
PB  - Salween Publisher
KW  - Maximum use of Resources
KW  - Conservation of Resources
ER  -