Copi, Irving M. <br/><br/>
Symbolic logic / 
[by] Irving M. Copi. 
 - 4th ed. 
 - New York :  Macmillan,  1973. 
 - xiii, 350 p. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical.
<br/><br/><label>Dewey Class. No.: </label>511.3  / COS 1973