Ketchum, J. Davidson. <br/><br/>
Ruhleben :  a prison camp society / 
J. Davidson Ketchum. 
 - Canada :   Toronto,   c 1965. 
 - xxiii, 397 p. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>340  340 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social psychology.<br/>Social group.
<br/><br/><label>Dewey Class. No.: </label>365.45 / K491r