Wolf, Edward C. <br/><br/>
On the brink of extinction :  conserving the diversity of life / 
Edward C. Wolf. 
 - Washington, DC :  Worldwatch Institute,  1987. 
 - 54 p. : ill. 
 - Worldwatch paper ; 78 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological diversity conservation