Bargman, Robert D. <br/><br/>
Characterization of the activated sludge process / 
by Robert D. Bargman and Joseph Borgerding 
 - Washington :  United States Government Printing Office,  1973 
 - viii, 63 p. :  ill. ;  28 cm. 
 - Environmental Protection Technology Series .
<br/><br/> EPA-R2-73-224 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage disposal
<br/><br/><label>Dewey Class. No.: </label>628.366