TY  - BOOK
AU  - Gopal, Brij
AU  - Bhardwaj, N.
TI  - Elements of ecology
SN  - 0-7069-1560-7
U1  - 577 
PY  - 1981///
CY  - New Delhi
PB  - Vikas
KW  - Ecology
KW  - Ecosystem
KW  - Population ecology
N1  - Includes bibliographical references and index
ER  -