Purtill, Richard L. <br/><br/>
Logic for philosophers 

 - New York   : Harper & Row,  1971. 
 - xxii, 419p.   : ill.   ; 25cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.
<br/><br/><label>LC Class. No.: </label>BC71.P86