TY  - BOOK
AU  - Kochhar, P. L.
TI  - Plant ecology
U1  - 581.7 
PY  - 1983///
CY  - New Delhi
PB  - Ratan Prakashan Mandir
KW  - Ecology
KW  - Climatic factors
KW  - Ecosystem
KW  - Environmental pollution
ER  -