TY  - GEN
AU  - Tripathi, Arun K 
TI  - Environmental studies:  multiple choice questions
SN  - 9788179935828
PY  - 2016///
CY  - New Delhi
PB  - The energy and resources institute(TERI)
KW  - Environmental science  - Multiple choice questions
KW  - Competitive examination guides
ER  -