Ehrenfeld, David W. <br/><br/>
Conserving life on earth 
David W. Ehrenfeld. 
 - New York :  Oxford University Press,  1972. 
 - xv, 360 p. :  ill. ;  24 cm. +  hbk. 
<br/><br/> Published in 1970 under title: Biological conservation. 
<br/><br/>Includes bibliographical references (pages 337-351) and index. 
<br/><br/>Introduction -- How natural communities are threatened: ecology and man-made change -- How natural communities are threatened: Pollution, industrial accidents and species manipulations -- Two endangered natural communities -- How species are threatened -- The fate of the blue whale -- Preservation of natural communities -- Analogues of natural communities -- Preservation of species -- Conclusions. 
<br/><br/><label>LCCN: </label>72085776 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature conservation.<br/>Ecology.
<br/><br/><label>Dewey Class. No.: </label>301.31