Eckhom, Erik <br/><br/>
Disappearing species :  the social challenge / 
Erik Eckhom 
 - Washington :  WI ,  1978 
 - 38p. :  ill. ;  20 cm. 
 - Worldwatch paper  No. 22 .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology
<br/><br/><label>Gov. Doc. Class. No.: </label>US WI P-22