TY  - GEN
AU  - Rana,S.V.S.
TI  - Essentials of ecology and environmental science
SN  - 9788120347861
U1  - 628 
PY  - 2013///
CY  - Delhi
PB  - PHI Learning
KW  - Environmental  Science
KW  - Ecology
KW  - Environmental protection
KW  - Human ecology
ER  -