Malitao, Arnel L. <br/><br/>
Essential logic / 
Arnel L. Malitao. 
 - Mandaluyong City :  National Book Store,  2003. 
 - 266p. :  ill. ;  22 cm. 
<br/><br/> Includes bibliography. 
<br/><br/><label>ISBN: </label>9710863835 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.<br/>Reasoning.