'Umar, Faruq,  1938-, <br/><br/>
The Abbasid caliphate ; 132/750-170/786 / 
by Farouk Omar. 
 - 418 pages ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Abbasids--History--750-1258.<br/>Islamic Empire--History--750-1258.