Priests and politicians :

By Crummey, Donald.. Oxford : Clarendon Press, 1972 , Based on the author's thesis (Ph.D.), University of London. | Includes index.

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The journals of C. W. Isenberg and J. L. Krapf detailing their proceedings in the kingdom of Shoa and journeys in other parts of Abyssinia in the years 1839, 1840, 1841 and 1842,

By Isenberg, Charles William, 1806-1864.. London, Cass, 1968 , Facsimile reprint of 1st ed., London, Seeley, Burnside and Seeley, 1843.

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