Siddiqi, Amir Hasan <br/><br/>
Caliphate and sultanate :  in medieval Persia / 
Amir Hasan Siddiqi 
 - 3rd ed. 
 - Karachi :  Jamiyat-ul-Falah Publications,  1969 
 - 224 p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Caliphate
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Iran--History--640--1500