This definition appears rarely
1985. Review of endangered cattle breeds of Africa. In: Hodges J. (eds), Animal genetic resources in Africa: high potential and endangered livestock, Second OAU Expert Committee Meeting on Animal Genetic Resources in Africa held in Bulawayo, Zimbabwe, 24-28 November 1983. OAU-IBAR (Organization of African Unity/Inter-African Bureau for Animal Resources), Nairobi, Kenya. pp. 20-32.