TY  - BOOK
AU  - Rao, P. Venugopala
TI  - Textbook of Environmental Engineering
SN  - 9788120319301
U1  - 614.7 
PY  - 2002///
CY  - New Delhi
PB  - PHI Learning
KW  - Environmental engineering
N1  - Textbook of Environmental Engineering
ER  -