TY  - BOOK
AU  - Venugopala Rao P.
TI  - Principles of Environmental Science and Engineering
SN  - 0000048343
U1  - 628.1 
PY  - 2006///
CY  - New Delhi
PB  - PHI
KW  -  Environmental
KW  -  Principles
KW  -  Science
KW  - Engineering
KW  - Water supply & sanitary Engg
ER  -