TY  - BOOK
AU  - sharma,P.D.
TI  - Environmental biology : a text book for university students 
SN  -  81-7133-749-X
U1  - 580 
PY  - 2005///
CY  - New Delhi
PB  - Rastogi pub.
KW  - Environmental biology
N1  - includex index.
ER  -