TY  - BOOK
AU  - DE,Anil Kumar
AU  - De,Arnab Kumar
TI  - Environmental studies
SN  -  81-334-1604-7
U1  - 574 
PY  - 2005///
CY  - New Delhi
PB  - New Age International
KW  - Environmental Science
N1  - Includes index
ER  -