TY  - BOOK
AU  - De, Anil Kr.,
AU  - De, Arnab Kr.,
TI  - Enviromental studies
SN  - 81-224-1293-9
U1  - 363.7 
PY  - 2001///
CY  - New Delhi
PB  - New Age international publishers
KW  - Environmental studies
ER  -