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