de Castro, Leonardo D.  <br/><br/>
Ethics & logic :  basic concepts / 
Leonardo D. de Castro and Agerico M. de Villa. 
 - Quezon City :  Katha Publishing Co., Inc.   c1993. 
 - x, 223p.  
<br/><br/>
<br/><br/><label>Dewey Class. No.: </label>100 D355e 1993 c.1