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Studies in the history of the Sokoto Caliphate : the Sokoto seminar papers. Zaria: Dept. of History, Ahmadu Bello University for the Sokoto State History Bureau; 1979.
87179874edited by Y.B. Usman.21 cm.Papers from the third annual seminar, held in Sokoto, Nigeria, Jan. 6-10, 1975.Includes bibliographies.