TY  - BOOK
AU  - Viessman Warren
AU  - Hammer, Mark J
TI  - Water supply and pollution control: Warren, Viessman, 
SN  - 9788129711540
U1  - 628.16 V6782w7 
PY  - 2005///
CY  - Delhi
PB  - Pearson Education (Singapore)
KW  - Water--Purification
KW  - Sewage--Purification
ER  -