De Castro, Leonardo D. PH.D. <br/><br/>
Ethics and logic:   basic concepts/  
Leonardo D. De Castro, PH.D. 
 - Q.C.:   Katha Publishing Co., Inc.,   c1993. 
 - x, 223 p. ;   25 cm. 
<br/><br/> Includes appendix. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>1. Ethics.<br/>2. Logic. 
<br/><br/><label>Dewey Class. No.: </label>Fil. 170 D34e 1993