TY  - BOOK
AU  - Rao, P. Venugopala
AU  - 
TI  - Principles of environmental science and engineering
SN  - 81-203-2893-0
U1  - 504 
PY  - 2006///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Environmental science
KW  - Environmental engineering
ER  -