Ecology/ 
edited by Robert S Leisner & Edward J Kormondy. 
 - Dubuque, Iowa (U.S.A) :  WM. C Brown Company,   1971. 
 - vii, 98 pages :  illustrations ;  28 cm. 
 - Foundations for today series. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0697046729 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.