Coutts, H.J. <br/><br/>
Extended aeration sewage treatment in cold climates / 
H.J. Coutts and C.D. Christianson 
 - Washington, D.C. :  United States Environmental Protection Agency,  1974 
 - vii, 81 p. :  ill. ;  29 cm. 
 - Environmental protection technology series .
<br/><br/> EPA-660/2-74-070 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage<br/>Pollution
<br/><br/><label>Dewey Class. No.: </label>363.7284