Cruz, C.L. <br/><br/>
Introduction to logic / 
Corazon L. Cruz. 
 - 4th edition. 
 - Mandaluyong City:  National Book Store,  c1995. 
 - 362 p.;  22 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>971-08-5797-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.
<br/><br/><label>Dewey Class. No.: </label>GC 160 C957 1995