Caliphate and kingship in medieval Persia - Siddiqi, Amir Hasan (Philadelphia : Porcupine Press, 1977)
Reprint of articles from vols. 9-11 of Islamic culture, Hyderabad, 1935-1937
Keywords: Caliphate; Iran -- History -- 640 -- 1500; Iran -- Politics and government; Islamic Empire -- Politics and government