TY  - BOOK
AU  - Tiwari ,Vijay Kumar
TI  - A text of Environmental Studies 
SN  - 9788184886405
U1  - 333.707 
PY  - 2014///
CY  - Mumbai: 
PB  - Himalaya Publishing , 
KW  - Biodiversity
KW  - Eco System
KW  - Environmental Science
KW  - Human Pollution
ER  -