TY  - BOOK
AU  - RAVIKRISHNAN
TI  - ENVIRONMENTAL SCIENCE AND ENGINEERING
SN  - 9788190890809
U1  - 628 P5 RAV 
PY  - 2005///
PB  - SRI KRISHNA HITECH PUBLISHING COMPANY
KW  - SANITARY AND MUNICIPAL ENGINEERING [Environmental Protection Engineering]
ER  -