Quintana, Juan. <br/><br/>
Ethikos  sistemas éticos y problemas modernos 
Juan Quintana. 
 - San Juan, P.R.  Téchne  1990. 
 - 353 p. 
<br/><br/> Bibliography: p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ethics, Modern--20th century.<br/>Ethics--Puerto Rico--20th century.