TY  - BOOK
AU  - V.K. Agarwal
AU  - Verma, P.S.
TI  - Environmental Biology
SN  - 81-219-0859-0
U1  - 577 
PY  - 1983///
CY  - New Delhi
PB  - S.Chand
KW  - Biology
KW  - Ecology, Eniviromental Biology
ER  -