TY  - BOOK
AU  - AGARWAL, V.K.
AU  - VERMA, P.S.
TI  - ENVIRONMENTAL BIOLOGY: PRINCIPLES OF ECOLOGY
SN  - 81 219 0859 0
U1  - 577 
PY  - 1996///
CY  - New Delhi
PB  - S.Chand and Company Ltd., New Delhi 
ER  -