REFERENCES
- Davey, T. H. (1948). Trypanosomiasis in British West Africa. Lond.: H.M. Stationery Office.
- Desowitz, R.S., and Watson, H. J. C. (1951). Studies on Trypanosoma vivax. I: Susceptibility of white rats to infection. Ann. trop. Med. Parasit., 45, 207.
- Desowitz, R.S., and Watson, H. J. C. (1952). Studies on Trypanosoma vivax. III: Observations on the maintenance of a strain in white rats. Ibid., 46, 92.
- Godfrey, D. G. (1960). Types of Trypanosoma congolense. I: Morphological differences. Ibid., 54, 428.
- Godfrey, D. G. (1961). Types of Trypanosoma congolense. II: Differences in the courses of infection. Ibid., 55, 154.
- Macfie, J. W. S. (1913). Trypanosomiasis of domestic animals in Northern Nigeria. Ibid., 7, 1. (Abstracted in Trop. vet. Bull., 1913, 1, 208.)
- Mason, I. L. (1951). The classification of West African livestock. Farnham Royal: Commonwealth Agricultural Bureaux.
- Northern Nigeria (1960). Annual report of the Sleeping Sickness Service for 1959. Kaduna: Ministry of Health. [Mimeographed.]
- Stephen, L. E., and Gray, A. R. (1960). The trypanocidal activity of nucleocidin against Trypanosoma vivax in West African Zebu cattle. J. Parasit., 46, 509.
- Unsworth, K. (1953). Studies on Trypanosoma vivax. VIII: Observations on the incidence and pathogenicity of T. vivax in Zebu cattle in Nigeria. Ann. trop. Med. Parasit., 47, 361.
- Unsworth, K. and Chandler, R. L. (1952). Field trials with prophylactic Antrycide in West Africa. Ibid., 46, 240.
- Wenyon, C. M. (1926). Protozoology, vol. 1, p. 542. Lond.: Baillière, Tindall and Cox.
- Williamson, J., and Stephen, L. E. (1960). A test for drug-resistant trypanosomes in experimental tsetse-fly challenge of cattle. Ann. trop. Med. Parasit., 54, 366.