Welch, Paul Smith,    1882- <br/><br/>
Limnology /  
P. S. Welch 
 - 2nd ed. 
 - New York :    McGraw-Hill,    1952. 
 - xi, 538 p. :    ill. ;    24 cm. 
 - McGraw-Hill publication in the zoological sciences .
<br/><br/>Includes bibliographical references (p. 443-510) and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Limnology.
<br/><br/><label>Dewey Class. No.: </label>581.92