Cruz, Corazon L. <br/><br/>
Introduction to logic / 
Corazon L. Cruz. 
 - 4th Edition. 
 - xii, 363 p. :  illustrations ;  22cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9710857975 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.