TY  - BOOK
AU  - CHATWAL, G.R.
AU  - HARISH SHARMA
TI  - TEXTBOOK OF ENVIRONMENTAL STUDIES
SN  - 81 8318 013 2
U1  - 577 
PY  - 2004///
CY  - Bombay
PB  - Himalaya Publishing House, Bombay 
ER  -