1. HOME RANGE, BEHAVIOUR, AND RECRUITMENT RATES OF TWO BLACK RHINOCEROS POPULATIONS
2. D. Herlocker(1967 ). Vegetation types of the Ngorongoro Conservation Area. Unpublished manuscript.
3. H. J. VanRensburg(1963 ). Ecological research as a basis for management . Conservation of Nature and Natural Resources in modern African Slates. Paper presented at I.U.C.N. symposium at Arusha, Tanganyika, September 1961.