TY  - BOOK
AU  - Rao, P. Venugopala
ED  - 
TI  - Principles of environmental science and engineering
SN  - 81-203-2893-0
U1  - 628.01 
PY  - 2006///
CY  - New Delhi
PB  - Prentice Hall of India
KW  - 1. ENVIRONMENTAL SCIENCE
N1  - Includes index
ER  -