TY  - BOOK
AU  - Rao, P. Venugopala
TI  - Textbook of Environmental Engineering
U1  - 620.8 
PY  - 2012///
CY  - New Delhi
PB  - PHI Learning Pvt. Ltd.
KW  - Engineering and allied operations
KW  - Technology (Applied sciences)
KW  - Biotechnology
ER  -