De Vera, DENNIS A. <br/><br/>
Brief guide to symbolic logic / 
DENNIS A. De Vera 
 - viii. 192 p.; 22 cm 
<br/><br/><label>ISBN: </label>9789719467779 9789789719464 
<br/><br/><label>Subjects--Topical Terms: </label><br/>1. Logic, symbolic and mathematical