Crone, Patricia,  1945-2015 <br/><br/>
Slaves on horses :    the evolution of the Islamic polity /  
Patricia Crone.  
 - Cambridge, England :  Cambridge University Press,  1980 
 - ix, 302 p. ;  23 cm.  
<br/><br/> Based on part of the author's thesis, University of London, 1973. 
<br/><br/>Includes bibliographical references and index.  
<br/><br/><label>ISBN: </label>0521229618 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Islamic Empire--Politics and government 
<br/><br/><label>LC Class. No.: </label>DS38.5