TY  - BOOK
AU  - Vasudevan, N. 
TI  - Essentials of environmental  science/by  N. Vasudevan
SN  - 9788173197062
U1  - 363.7 
PY  - 2009///
CY  - New Delhi
PB  - Narosa Publishing House
KW  - Social problems and services |
KW  -  Social sciences
KW  - Environmental sciences
ER  -