Popkin, Richard H. & Stroll, Avrum <br/><br/>
Philosophy Made Simple 
By Richard H. Popkin & Avrum Stroll 
 -  Doubleday & Company, Inc.  1956 
 - 192 pages, 26 cm 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>0-385-01217-9 
<br/><br/><label>Dewey Class. No.: </label>100 P81