by Gaetano Casati ; translated from the original Italian manuscript by J. Randolph Clay ; assisted by I. Walter Savage LandorNegro University Press1969
National Archives of Rhodesia and Nyasaland, Centro de Estudos Históricos UltramarinosNational Archives of Rhodesia and Nyasaland, Centro de Estudos Históricos Ultramarinos1962-<1989 >