Copi, Irving M. <br/><br/>
Introduction to logic / 
Irving M. Copi. 
 - 7th ed. 
 - New York :  MacMillan,  1986. 
 - 617 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>0023250208 
<br/><br/><label>LCCN: </label>85-013751 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic