TY  - BOOK
AU  - Singh, Surendra and Parmar, Virinder
TI  - General Studies for Civil Services Preliminary Examination:GS Paper I 
SN  - 978-93-90219-06-3
U1  - 378.1662 SIN/GEN 
PY  - 2021///
CY  - Chennai
PB  -  McGraw Hill Education
ER  -