TY  - BOOK
AU  - Rao, P Venugopala. 
TI  - Principles of environmental science and engineering
AV  - TD145 RAO
PY  - 2006///
CY  - New Delhi
PB  - Prentice Hall
KW  - OCLC
KW  - Environmental engineering.
KW  - Environmental sciences.
KW  - Pollution.
KW  - Environmental health.
UR  - http://classify.oclc.org/classify2/ClassifyDemo?owi=5351448938
ER  -