Water environment research  [microform]. 

 - Alexandria :  Water Environment Federation,  1928- 
 - 23 microfilms reel ;  35 mm. 
 - Vol.41, (Jan-Dec 1969)- Vol.61, (Jan-Aug 1989) 
<br/><br/><br/>Requires the use of a microfilm reader. 
 = Water environment research 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality management--Periodicals.<br/>Sewage--Purification--Periodicals.<br/>Water--Pollution--Periodicals.