Purtill, Richard L. <br/><br/>
Philosophically speaking. 
Richard L. Purtill. 
 - New Jersey:   Prentice Hall,         1975. 
 - xx,226p. 
<br/><br/><label>ISBN: </label>0136625517 
<br/><br/><label>Dewey Class. No.: </label>R  L5