REFERENCES
- Harley, G. W. (1933). Ganta dispensary patients; A statistical study of 6291 consecutive out-patients in northeastern Liberia. American Journal of Tropical Medicine and Hygiene, 13, 67–96.
- Levine, D. M. (1960). Research projects concerning schistosomiasis. Annual Report Liberian Institute American Foundation Tropical Medicine, 105–106.
- Levine, D. M. (1961). A new potential host in Liberia for Schistosoma haematobium—Bulinus (Pyrophysa) forskalii. Annual Report Liberian Institute American Foundation for Tropical Medicine, 66–67.
- Maas, E. (1927). Zur Pathologie des Liberianischen Hinterlandes. Hamburgische Universität Abhandlungen Aus dem Gebiet der Auslandkunde, 26, 268–273.
- Maas, E. & Vogel, H. (1930). Beobachtungen über Schistosomiasis mansoni in Französisch-Guinea und Liberia. Archiv Für Schiffs- und Tropen- Hygiene Pathologie und Therapie Exotischer Krankheiten, 34, 564–566.
- Miller, M. J. (1957). A survey of Schistosoma haematobium infections in man in Liberia. American Journal of Tropical Medicine and Hygiene, 6, 712–714.
- Olivier, L. & Schineiderman, M. (1956). A method for estimating the density of aquatic snail populations. Experimental Parasitology, 5, 109–117.
- Poindexter, H. A. (1949). A laboratory epidemiological study of certain infectious diseases in Liberia. American Journal of Tropical Medicine and Hygiene, 29, 435–442.
- Strong, R. P. & Shattuck, G. C. (1930). The African Republic of Liberia and the Belgian Congo, pp. 198–512. Cambridge, Mass.: Harvard University Press.
- Veatch, E. P. (1946). Schistosomiasis in Liberia. American Journal of Tropical Medicine and Hygiene, 26, 53–56.
- Vogel, D. H. (1932). Beitrage zur Epidemiologie der Schistosomiasis in Liberia und Französisch-Guinea. Archiv Für Schiffs- und Tropen- Hygiene Pathologie und Therapie Exotischer Krankheiten, 36, 108–135.
- Vogel, H. (1958). Snail colonies. Annual Report Liberian Institute American Foundation for Tropical Medicine, 35–36.
- Walter, H. J. (1959). Field studies on the ecology and Bionomics of snail vectors of Schistosomiasis. Annual Report Liberian Institute American Foundation Tropical Medicine, 43–50.
- Walter, H. J. (1962). Anatomical and conchological study of Liberian schistosome-vector snails and their relatives. Annual Report Liberian Institute American Foundation for Tropical Medicine, 49–53.
- Walter, H. J. (1963). Conchology of the snail vectors of Schistosoma. Annual Report Liberian Institute American Foundation for Tropical Medicine, 22–23.