Bullen, R. A. (1906). On some land and fresh-water Mollusca from Sumatra. Part I. Proceedings of the Malacological Society of London. 7(1): 12–16, pl. 2.
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Bullen, R. A.
1906
On some land and fresh-water Mollusca from Sumatra. Part I
Proceedings of the Malacological Society of London