TY  - BOOK
AU  - Sharma,P.D.
TI  - Ecology and environment
SN  -  817133380X
U1  - 581.5222 
PY  - 1998///
CY  - New Delhi
PB  - Rastogi publikations
KW  - Geography
KW  - ভূগোল
N1  - Include index
ER  -