Agapay, Ramon B.  <br/><br/>
Logic :   the essentials of deductive reasoning / 
Ramon B. Agapay.  
 - Mandaluyong City :  National Book Store,   c1991. 
 - 214 p.  
<br/><br/>Includes bibliographical references.  
<br/><br/>
<br/><br/><label>ISBN: </label>971-08-4891-7 
<br/><br/><label>Dewey Class. No.: </label>Fil 160 Ag151e 1991