TY  - BOOK
AU  - Rao 
TI  - Principles of environmental science and engineering 
SN  - 8120328930 
U1  - 628 RAO 2006 
PY  - 2006///
CY  - New Delhi
PB  - Prentice-Hall of india Private Limited
KW  - Environmental engineering
KW  - Environmental protection
KW  - Environmental sciences
N1  - Includes index
ER  -