Lyall, C. H Twenty years in Khama's country; and, Pioneering among the Bataua na of Lake Ngami / told in the letters of J. D. Hepburn; edited by C . H. Lyall. - 3rd ed. - London: Frank Cass & Co., 1970. - xiii, 396 p. ill. Subjects--Personal Names: Hepburn, J. D. Subjects--Topical Terms: Missions--Bechuanaland. Dewey Class. No.: 276.87 LYA