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Economic foundations
Goitein, Shlomo Dov, (1967)
Jews and Arabs : their contacts through the ages
Goitein, Shlomo Dov, (1964)
Yaḥyā Ben Ādam's Kitāb al-kharāj
Yaḥyā Ibn-Ādam, Abū-Zakarīya Ibn-Sulaimān, (1958)