Hurley, Patrick J. <br/><br/>
A Concise introduction to logic / 
Patrick J. Hurley. 
 - 5th ed. 
 - Belmont, California :  Wadsworth Publ. Co. ,  1994. 
 - XVI, 624 p. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0-534-21174-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logics