TY  - BOOK
AU  - De,Anil kumar
AU  - De,Arnab Dey  .
TI  - Environmental studies / 
SN  - 8122416047
U1  - 372.357 
PY  - 2005///
CY  - New Delhi : 
PB  - New Age International , 
KW  - ENVIRONMENTAL STUDIES
N1  - includes index
ER  -