Copi, Irving M. <br/><br/>
Informal logic. 

 - 2nd/ed. 
 - New York :  Macmillan,  c1992. 
 - xi, 354p.  illus. (pbk)  25cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0023249404 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic--c1992--New York--paperback