Sources of toxic pollutants found in influents to sewage treatment plants/ 
by P. Levins ... [et al.] 
 - Washington DC.  :  U. S. Environmental protection agency, Office of water planning & standards, Monitoring and Data support Division ; United States, Government Printing Office,  1979 
 - v. :  ill. ;  23 cm. 
<br/><br/>v.5.-.Hartford water pollution control plant Hartford, Connecticut.-.1v.(various pagings) Library has vol. 5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pesticides--Environmental aspects<br/>Pollution--Environmental aspects
<br/><br/><label>Dewey Class. No.: </label>363.7384