TY  - BOOK
AU  - Singh,Surender
AU  -  Parmar, Virinder
TI  - General studies for civil services preliminary examination: paper 1 
SN  - 9789355321039
U1  - 050   SIN/G 
PY  - 2023///
CY  -  Chennai: 
PB  - McGraw Hill Education, 
ER  -