The Ethnographic Survey of Africa. East Central Africa, Part V: The Kikuyu and Kamba of Kenyaby John Middleton;The Ethnographic Survey of Africa. East Central Africa, Part VI: The Northern Nilo-Hamitesby G. W. B. Huntingford;The Ethnographic Survey of Africa. East Central Africa, Part VII: The Central Nilo-Hamitesby Pamela Gulliver; P. H. Gulliver;The Ethnographic Survey of Africa. East Central Africa, Part VIII: The Southern Nilo-Hamitesby G. W. B. Huntingford;The Ethnographic Survey of Africa. Southern Africa, Part II: The Southern Sothoby V. G. S. Sheddick;The Ethnographic Survey of Africa. Southern Africa, Part III: The Tswanaby I. Schapera;The Ethnographic Survey of Africa. Western Africa, Part VII: Peoples of the Plateau Area of Northern Nigeriaby Harold. D. Gunn