REFERENCES
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- Blacklock, D. B. (1930). Report on a survey of human diseases in the Protectorate of Sierra Leone, pt. I: Northern Province.
- Blacklock, D. B. and Thompson, M. G. (1924). Human schistosomiasis due to S. haematobium in Sierra Leone. Ann. Trop. Med. & Parasitol., 18, 211.
- Connolly, M. (1928). The non-marine mollusca of Sierra Leone. Ann. & Mag. Nat. Hist., 10th Ser., 1, 529.