Wetzel, Robert G. <br/><br/>
Limnological analyses / 
Robert G. Wetzel, Gene E. Likens 
 - Philadelphia :  W. B. Saunders,  1979 
 - vii, 357 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>ISBN: </label>0721692435 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Limnology--Technique