Koestler, Arthur,  1905- <br/><br/>
The Thirteenth tribe  the Khazar Empire and its heritage 
Arthur Koestler 
 - London  Hutchinson  1976 
 - 255 p. ; 23 cm. 
<br/><br/><label>ISBN: </label>0091255503 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Khazars