TY  - BOOK
AU  - Sharma, P.D.
TI  - Ecology and Environment 
SN  - 9788171339655
U1  - 581.5   S 233 E 
PY  - 2012///
CY  - New Delhi
PB  - Rastogi Pub. Meerut. New Dehli
KW  - Ecology
ER  -