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