TY  - BOOK
AU  - V.K. Agarwal
AU  - Verma, P.S.
TI  - Priciples of Ecology
U1  - 577 
PY  - 1989///
CY  - New Delhi
PB  - S. Chand and Company
KW  - Biology
KW  - Principles of Ecology
ER  -