Introduction to logic/ 
Corazon L. Cruz 
 - 4th edition 
 - Mandaluyong City:  National Book Store,  1995. 
 - xii, 363 pages:  illustrations;  22 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9710857975 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic
<br/><br/><label>LC Class. No.: </label>Fil BC 108 .C889 1995