Singer, Peter. <br/><br/>
Etica práctica 
Peter Singer; trducción de Marta I. Guastavino. 
 - Barcelona  Ariel  1984. 
 - 287 p. 
<br/><br/> Translated of : Practical Ethics.  Includes index. 
<br/><br/><label>LCCN: </label>fel36002127  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social ethics<br/>Ethics
<br/><br/><label>LC Class. No.: </label>BJ1012  / .S49 
<br/><br/><label>Dewey Class. No.: </label>170