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A new subspecies of Asperitas bimaensis (Mousson, 1849) from western Sumbawa, West Nusa Tenggara, Indonesia
Vol 51, Iss 4, Page 306
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A new species of Papuina von Martens, 1860 from Nabire, Papua, Indonesia
Vol 51, Iss 4, Page 314
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The Fossil Cypraeidae of the Fruitville Member (Unit 4) and Kissimmee River Valley Equivalent, Tamiami Formation of Southern Florida: (Mollusca: Gastropoda: Cypraeidae)
Vol 51, Iss 4, Page 273
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A Review of the Carolinean Province Americoliva nivosa Complex (Gastropoda: Olividae) with the Description of a New Subspecies
Vol 51, Iss 4, Page 284
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A new species of Amphidromus (Mollusca: Gastropoda: Camaenidae) from Vietnam, and a Replacement Name for Amphidromus berschaueri mingmini Thach, 2019
Vol 51, Iss 4, Page 293
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Review on the synonymy concerning genus Amphidromus Albers, 1850 (Gastropoda: Camaenidae), with descriptions of new species
Vol 51, Iss 4, Page 297