Welch, Paul S <br/><br/>
Limnology 

 - 2 
 -  McGraw-Hill Book Company, New York  1952 
 - 538 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Limnology; Marine biology
<br/><br/><label>Dewey Class. No.: </label>574.929  WEL-L2