TY  - BOOK
AU  - Venugopala Rao, P.
TI  - Textbook of environmental engineering
SN  - 8120319303
U1  - 628.53 
PY  - 2005///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Environmental pollution
KW  - Environmental engineering
ER  -