Cruz, Corazon L. <br/><br/>
Introduction to logic / 
Corazon L. Cruz. 
 - 4th ed. 
 - xii,363 pages. ;  22 cm. 
<br/><br/> Bibliography: p.359.  Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.