TY  - BOOK
AU  - Rana,S.V.S.
TI  - Essentials of ecology and environmental science
SN  - 812032773X :
AV  - GE105 .R36 2006
PY  - 2006///
CY  - New Delhi
PB  - Prentice Hall of India
KW  - Environmental sciences
ER  -