TY  - BOOK
AU  - Vasudevan , N.
AU  - Vasudevan , N.
TI  - Essentials of environmental science
SN  - 978-81-7310-706-2
U1  - 363.7 VAE 22
PY  - 2006///
CY  - New Delhi
PB  - Narosa Publishing House.
KW  -  
KW  - Environmental science
ER  -