TY  - BOOK
AU  - Venugopala,Rao P.
TI  - Textbook of environmental engineering
SN  - 8120319303
AV  - TD145 .G38 2008eb
PY  - 2002///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Environmental engineering
KW  - Sanitary engineering
KW  - Water
KW  - Purification
KW  - Pollution
ER  -