TY  - BOOK
AU  - Khanna, D. R. 
ED  - Chopra, A. K. 
ED  - Matta, G. 
ED  - Singh, V.
ED  - Bhutiani, R. 
TI  - Environmental Technology 
SN  - 9788170358237
U1  - 574.52 
PY  - 2013///
CY  - New Delhi
PB  - Daya Publishing House 
ER  -