TY  - BOOK
AU  - Wright, Richard T.
AU  - Wright, Richard T.Nebel, Bernard J.
TI  - Environmental science :  toward a sustainable future    
SN  - 9788120321571
AV  - 628 WRI 2002 
U1  - 628 WRI 2002 
PY  - 2002///
CY  - New Delhi
PB  - Prentice, hall of India
KW  - Civil Engineering
ER  -