Other Namibian references:
Brown, D.S., and B.A. Curtis. 1992. Taxonomy of the freshwater
snail Afrogyrus anderssoni (Ancey, 1890, Planorbis) from Namibia
(South West Africa). Journal of Molluscan Studies 58(4):443-446.
Brown, D.S., B.A. Curtis, and D. Rollinson. 1996. The freshwater
snail Bulinus tropicus (Planorbidae) in Namibia, characterised
according to chromosome number, enzymes and morphology.
Hydrobiologia 317(2):127-139.
Brown, D.S., B.A. Curtis, S. Bethune, and C.C. Appleton. 1992.
Freshwater snails of East Caprivi and the lower Okavango River Basin
in Namibia and Botswana. Hydrobiologia 246(1):9-40.
Curtis, B., K.S. Roberts, M. Griffin, S. Bethune, C.J. Hay, and H.
Kolberg. 1998. Species richness and conservation of Namibian
freshwater macro-invertebrates, fish, and amphibians. Biodiversity
and Conservation 7(4):447-466.
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Kevin S. Cummings
Illinois Natural History Survey
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Champaign, IL 61820
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