Dobson, Mike <br/><br/>
Ecology of aquatic systems / 
Mike Dobson and Chris Frid. 
 - Harlow :  Prentice Hall,  1998. 
 - viii, 222 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references (p.189-203) and index. 
<br/><br/><label>ISBN: </label>0582298040 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic ecology
<br/><br/><label>Dewey Class. No.: </label>577.6  DOB