TY  - BOOK
AU  - Sharma, P. D
TI  - Ecology and Environment
SN  - 81-7133-965-4
U1  - 577 SHA/E 
PY  - 2012///
CY  - New Delhi
PB  - Rastogi Publication
KW  - Ecology
KW  - Environment
KW  - Ecosystems
ER  -