Ehrenfeld, David W. <br/><br/>
Conserving life on earth/ 
David W. Ehrenfeld 
 - New York:  The University Press,  1972 
 - xv, 360 p.:  ill.;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> $ 10.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature conservation<br/>Wildlife protection<br/>Wildlife conservation<br/>Protected areas
<br/><br/><label>Dewey Class. No.: </label>799