Needham, James G. <br/><br/>
Guide to the study of fresh water biology 
by James G. Needham and Paul R.Needham 
 - 5th ed 
 - San Francisco  Holdenday  [19-?] 
 - x,108p. ; 24cm. 
<br/><br/><label>Dewey Class. No.: </label>574.52632  /  NEE