1. Anon. Annual Report (1961). Department of Veterinary and Tsetse Control Services Northern Rhodesia.
2. Alton, G. G. &Jones, L. M. (1963). Laboratory techniques in brucellosis.Monograph No. 7,F.A.O. Animal Health Branch, Rome.
3. Cunningham, B. (1968). Serological responses in cattle following vaccination with S19 and Brucella 45/20. Adjuvant vaccine.Veterinary Record,82, 7.
4. Gordon, W. S. (1953). Cit.Stableforth, A. W. Brucellosis inDiseases Due to Bacteria, Stableforth and Galloway,1, p. 86. Butterworths, London.
5. Goyon, M. (1969). Diagnostic bacterioscopique, bacteriologique et serologique des brucelloses.Recueil de médecine vétérinaire de l'Ecole d'Alfort,145, 833.