REFERENCES
- Alio, I. S. (1970). WHO/AFR/SCHIST/18. Geneva: WHO. Unpublished Reports pages.
- Blacklock, D. B. (1923). Annual Report of Medical and Sanitation Department 1923. Freetown: Government Printer.
- Blacklock, D. B. (1930). Annual Report of Medical and Sanitation Department 1930. Freetown: Government Printer.
- Blacklock, D. B. & Thomson, M. G. (1924). Annals of Tropical Medicine and Parasitology, 18, 235–237.
- Gbakima, A. A., Moriba, M. M., Samoh, M. A. & White, P. T. (1987). Public Health, 101, 199–205.
- Gerber, J. H. (1952a). Journal of Tropical Medicine and Hygiene, 55, 52–58.
- Gerber, J. H. (1952b). Journal of Tropical Medicine and Hygiene, 55, 79–93.
- Gordon, R. M., Davey, J. H. & Peaston, H. (1934). Annals of Tropical Medicine and Parasitology, 28, 323–418.
- Hubendick, B. (1976). Acta Regiae Societatis Scientarium et Litterarum Gothoburgensis, 3–30.
- Kamara, A. A. (1986). Undergraduate Project Report, unpublished. Njala University College.
- Kazura, J. W., Neill, M., Peters, P. S. & Dennis, E. (1985). American Journal of Tropical Medicine and Hygiene, 34, 107–111.
- Maas, E. & Vogel, H. (1930). Archiv für Schiffs und Tropenhygiene, 34, 564–566.
- Peaston, H. (1932). Annals of Tropical Medicine and Parasitology, 28, 497–499.
- Peters, P. A., Mahmoud, A. A. F., Warren, K. S., Ouma, J. H. & Arap Siongok, T. K. (1976). Bulletin of the World Health Organization, 54, 159–162.
- Peters, P. A., El Alamy, M., Warren, K. S. & Mahmoud, A. A. F. (1980). American Journal of Tropical Medicine and Hygiene, 29, 217–219.
- Sierra Leone Medical and Health Services (1952). Annual Report 1952. Freetown: Government Printer.
- Sierra Leone Medical and Health Services (1959). Annual Report 1959. Freetown: Government Printer.
- Vogel, H. (1932). Archiv für Schiffs und Tropenhygiene, 36, 106–135.
- White, P. T., Coleman, M. & Jupp, B. P. (1982). American Journal of Tropical Medicine and Hygiene, 31, 490–498.