Haris, Alan B. <br/><br/>
Alum addition to activated sludge with tertiary solids removal / 
by Alan B. Haris, John B. Stamberg and Dolloff F. Bishop 
 - Washington, D.C. :  U.S. Environmental Protection Agency,  1973 
 - vi, 25 p. :  ill. ;  28 cm. 
 - Environmental Protecton Technology Series .
<br/><br/> EPA 670/2-73-037  August 1973 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage sludge
<br/><br/><label>Dewey Class. No.: </label>628.364