Benton, Ted. <br/><br/>
Natural relations :  ecology, animal rights, and social justice / 
Ted Benton. 
 - London ;  New York :  Verso,  1993. 
 - 246 p. 
<br/><br/><label>ISBN: </label>0860913937 
<br/><br/><label>Subjects--Personal Names: </label><br/>Marx, Karl, 1818-1883--Contributions in political science.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human rights.<br/>Animal rights.<br/>Human ecology.<br/>Social ecology.