Sproul, Otis J. <br/><br/>
Creitical review of virus removal by coagulation processess and pH modifications / 
by Otis J. Sproul 
 - Washington :  Environment Protection Agency,  1980 
 - xi, 39 p. :  ill. ;  28 cm. 
 - Research and development .
<br/><br/> EPA-600/23-80-004 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Viruses<br/>Microorganisms
<br/><br/><label>Dewey Class. No.: </label>579.2