HURLY, Patrick J <br/><br/>
A Concise introduction to logic / 
Patrick J. Hurly 
 - 6th ed. 
 - California :    Wadsworth Publishing Co. ,  c1997. 
 - xvi, 655p. :  ill. ;   23cm.  
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0-534-50535-X 
<br/><br/><label>Dewey Class. No.: </label>160 HUR