RelBib: MĪXĀʾĪL ʿAWWĀD: Al-Maʾāṣir fī bilād ar-Rūm īva ’l-Ishām. Dirāsāt fi 't-taʾrīx al-iqtiṣūdī li 'd-duwal al-islāmīya. („Al-Maʾassir. Land and Sea Toll Barriers in Byzantine and Moslem Empires. Studies in the economic history of Moslem States"). Bagdad 1948. Maṭbaʿat al-maʿārif. 91 S

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