The world of ideas  essays for study 
Edited by Michael W. Alssid and William Kenney 
 - Rinehart and Winston, New York  Holt  1964 
 - x, 598 p. ; 24 cm. 
<br/><br/>Biliographical footnotes. 
<br/><br/><label>LCCN: </label>64-011204