The removal of metals and viruses in advanced waste water treatment sequences / 
Steven E. Esmond ... [et al.] 
 - Washington, D.C. :  U.S. Government Printing Office,  1980 
 - xix, 339 p. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Pollution--Congresses<br/>Trace elements in water--Congresses<br/>Viral pollution of water--Congresses
<br/><br/><label>Dewey Class. No.: </label>363.739420973