REFERENCES
- Abdel-Malek, E. T. (1950). Susceptibility of the snail Biomphalaria boissyi to infection with certain strains of Schistosoma mansoni. American Journal of Tropical Medicine, 30, 887–894.
- Chernin, E. & Michelson, E. H. (1957). Studies on the biological control of schistosome-bearing snails. III: The effect of population density on growth and fecundity in Australorbis glabratus. American Journal of Hygiene, 65, 71–80.
- Eveland, L. K. & Ritchie, L. S. (1972). Infectivity of cercariae of Schistosoma mansoni from snails on inadequate diets. Parasitology, 64, 441–444.
- Pan, C. (1963). Generalised and focal tissue responses in the snail Australorbis glabratus infected with Schistosoma mansoni. Annals of the New York Academy of Sciences, 113, 475–485.
- Ritchie, L. S., Berrios-Duran, L. A. & Deweese, R. (1963). Biological potentials of Australorbis glabratus: growth and nutrition. American Journal of Tropical Medicine and Hygiene, 12, 264–268.
- Rowan, W. B. (1958). Mass cultivation of Australorbis glabratus, intermediate host of Schistosoma mansoni in Puerto Rico. Journal of Parasitology, 44, 247.
- Standen, D. (1951). Some observations on the maintenance of Australorbis glabratus in the laboratory. Annals of Tropical Medicine and Parasitology, 45, 80–83.
- Webbe, G. & James, C. (1971). The importation and maintenance of schistosomes of human and veterinary importance. In Ninth Symposium of the British Society for Parasitology, ed. Taylor, A. E. R. Oxford: Blackwell.
- Wright, C. A. (1960). The crowding phenomenon in laboratory colonies of fresh water snails. Annals of Tropical Medicine and Parasitology, 54, 224–232.