Human impacts on life in fresh waters / 
edited by J. Salanki and P. Biro 
 - Budapest :  Akademia Kiado ,  1979 
 - 223 p. :  ill. ;  25 cm. 
 - Symposia biologica hungarica ;  v. 19 .
<br/><br/><label>ISBN: </label>9630517329 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lake ecology--Congresses.<br/>Water--Pollution--Environmental aspects--Congresses.<br/>Environmental impact analysis--Congresses.