TY  - BOOK
AU  - Gopal, Brij
AU  - N. Bhardwaj
TI  - Elements of Ecology
SN  - 0-7069-0973-9
U1  - 577 
PY  - 1979///
CY  - New Delhi
PB  - Vikas Publishing House
KW  - Biology
KW  - Ecology
ER  -