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Verdcourt, B. (1961). Notes on the snails of North-East Tanganyika. 9. A new species of Gonaxis (Streptaxidae) from the Usamvara mountains, with notes on the classification of the genus. Occasional papers of the Coryndon Memorial Museum, 8: 1-23.
Verdcourt, B. (1961). Notes on the snails of North-East Tanganyika. 9. A new species of Gonaxis (Streptaxidae) from the Usamvara mountains, with notes on the classification of the genus. Occasional papers of the Coryndon Memorial Museum, 8: 1-23.
