Welch.P.S. <br/><br/>
Limnology.(1952). 

 - 2nd Ed. 
 -  Tata McGraw-Hill Publishing Company Limited  1967 
 - 538p.  22 cm. 
<br/><br/><br/>Text in English 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>CIVI
<br/><br/><label>Index Terms--Genre/Form: </label><br/>C-12
<br/><br/><label>Dewey Class. No.: </label>25A-88  / WEL