Wetzel, Robert G. <br/><br/>
Limnology / 
Robert G. Wetzel. 
 - Philadelphia :  Saunders,  c1975. 
 - xii, 743 p. :  ill. 
<br/><br/><label>ISBN: </label>0721692400 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Limnology.<br/>Fresh water biology.