Lake eutrophication  - water pollution causes, effects and control ; papers presented at the "Save the Lakes symposium", August 18-19, 1969, Detroit Lakes, Minnesota 

 - Minneapolis, Minn. :  Water Resources Research Center,  1970 
 - 61 p. 
 - WRRC bulletin ;  no. 22 .
<br/><br/> PB 196 479 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Pollution--Congresses<br/>Detroit Lakes, Minnesota