Mills, Derek Henry. <br/><br/>
An introduction to freshwater ecology / 
[by] D. H. Mills. 
 - Edinburgh :  Oliver and Boyd,  1972. 
 - viii, 101 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references p. ( 93-95 ) and index. 
<br/><br/><label>ISBN: </label>0050023977 
<br/><br/><label>LCCN: </label>73-152696 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater ecology.
<br/><br/><label>Dewey Class. No.: </label>577.6