TY  - GEN
AU  - Vasudevan , N.
TI  - Essentials of environmental science
SN  - 9788173197062
U1  - 333.7 
PY  - 2006///
CY  - New Delhi
PB  - Narosa Publishing House
KW  - ENVIRONMENT
KW  - ECONOMICS
UR  - www.narosa.com
ER  -