REFERENCES
- Koura, M., Upatham, E. S., Awad, A. H. & Ahmed, M. D. (1981). Prevalence of Schistosoma haematobium in Koryole and Merca Districts, Somali Democratic Republic. Annals of Tropical Medicine and Parasitology, 75, 53–61.
- Sokal, R. R. & Rohlf, F. J. (1969). Biometry: The Principles and Practice of Statistics in Biological Research, 776 pp. San Francisco: W. H. Freeman and Company.
- Upatham, E. S. (1976). Field studies on the bionomics of the free-living stages of St. Lucian Schistosoma mansoni. International Journal for Parasitology, 6, 239–245.