TY  - BOOK
AU  - Rana,S.V.S, x
AU  - x
TI  - Essentials of ecology and environmental science: x
SN  - 8120323203
U1  - 574.5/R185e 
PY  - 2003///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Ecology
KW  - Environment
N1  - Includes
ER  -