TY  - BOOK
AU  - Khullar, D.R.
AU  - Rao, J.A.C.S. 
TI  - Environment for Civil Services (Prelims & Mains) and other competitive examinations
SN  - 9789339224981
U1  - 363.7 
PY  - 2016///
CY  - New Delhi
PB  - McGraw Hill Education
ER  -