Copi, Irving M. <br/><br/>
Introduction to logic / 
Irving M. Copi. 
 - 7th. ed. 
 - New York :  Macmillan,  1971. 
 - xiv, 617 p. :  ill. ;  25 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0023250208 0029461006 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.
<br/><br/><label>Dewey Class. No.: </label>160