TY  - BOOK
AU  - Singh, Sanjeev Kumar
TI  - environmental studies
SN  - 9788190886963
U1  - 910.13337 Q04 
PY  - 2010///
CY  - Delhi
PB  - Bharti Publications
KW  - Environment
KW  - Environmental studies - Geography
KW  - Title
ER  -