TY  - BOOK
AU  - Rao, P. Venugopala
TI  - Textbook of environmental engineering
SN  - 9788120319301
U1  - 628 
PY  - 2005///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Environmental engineering
N1  - Includes references & indexes
ER  -