Calalang, Bayani Antonio  <br/><br/>
To Be Logical  
Neliza C. Casela 
 - xi.; 147 p.; 22 cm  22cm 
<br/><br/><label>ISBN: </label>9710412150 
<br/><br/><label>Subjects--Personal Names: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>1. Logic