Pospesel, Howard,  1937- <br/><br/>
Introduction to logic :  propositional logic / 
Howard Pospesel ; with an appendix on metatheory by William G. Lycan 
 - 3rd ed. 
 - Upper Saddle River, N.J. :  Prentice Hall,  1998 
 - xii, 259 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0131649973 
<br/><br/><label>LCCN: </label>97-033465 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Proposition (Logic)<br/>Logic, Symbolic and mathematical<br/>Reasoning