Barker, Stephen Francis. <br/><br/>
The elements of logic / 
Stephen F. Barker. 
 - 3d ed. 
 - New York :  McGraw-Hill,  c1980. 
 - xi, 339 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0070037205  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.
<br/><br/><label>Dewey Class. No.: </label>160  / BAE 1980