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2. Arrival ofSemicassis pyrum(Lamarck) and other tonnacean gastropods in the southern ocean during Pleistocene time
3. Neogene tonnoideans of Indonesia;Beu A.G.;Scripta Geologica,2005
4. Recent deep-water Cassidae of the world. A revision of;Beu A.G.;Mémoires Du Muséum National D'histoire Naturelle,2008
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