Publication
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Die Holothuren Sammlung des Museums zu Amsterdam Article
Bijdragen tot de dierkunde, 17(1), 77-82.January 1893
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The amphipoda collected during the voyages of the Willem Barents in the Arctic Seas in the years 1880—1884 Article
Bijdragen tot de dierkunde, 17(1), 1-47.January 1893
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Neue und bekannte Süd-Asiatische Dipteren Article
Bijdragen tot de dierkunde, 17(1), 85-115.January 1893
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Two new species of the genus Helota from Burma Article
Notes from the Leyden Museum, 16(1/2), 97-106.January 1894
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On Cyclommatus squamosus Rits Article
Notes from the Leyden Museum, 16(1/2), 110-110.January 1894
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On a collection of Helotidae from Kurseong Article
Notes from the Leyden Museum, 16(1/2), 111-118.January 1894
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Die Fische Liberia’s Article
Notes from the Leyden Museum, 16(1/2), 1-96.January 1894
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Catalogue systématique de la collection de feu Mr. J. P. van Wickevoort Crommelin Article
Muséum d'histoire naturelle des Pays-Bas, 14(1), 3-94.January 1894