Hansen, Sigurd P. <br/><br/>
Estimating water treatment costs / 
by Sigurd P. Hansen, Robert C. Gumerman and Russell L. Culp 
 - Cincinnati :  U.S. Government Printing Office,  1979- 
 - v. ;  28 cm. 
<br/><br/> V.3 cost curves applicable to 2,500 gpd to 1 mgd treatment  EPA-600/2-79-162 C  Library has v.3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Purification<br/>Sewage--Purification--Biological treatment
<br/><br/><label>Dewey Class. No.: </label>628.16