TY  - BOOK
AU  - Viessman, Warren  .
AU  - Hammer,Mark J  .
TI  - Water supply and pollution control / 
SN  - 0  06  046821  1
U1  - 628.168 
PY  - 1985///
CY  - New York : 
PB  - Harper and Row Publishers , 
ER  -