TY  - BOOK
AU  - Sharma, KB.
AU  - Singh, KK,
AU  - Parvin Kumar,
TI  - Priyavaraniya adhayan: environment studies 
U1  - 363 
PY  - 2013///
CY  - New Delhi
PB  - Shiv Hari Prakshan
KW  - ENVIRONMENTAL SCIENCE
ER  -