Harper, David <br/><br/>
Eutrophication of freshwaters :  principles, problems and restorat ion / 
David Harper 
 - London :  Chapman & Hall,  1992, repr.1995. 
 - viii, 327 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0412329700 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater biology<br/>Freshwater fauna<br/>Freshwater phytoplankton
<br/><br/><label>Dewey Class. No.: </label>574.929