Publication
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Mikroskopische studien ueber Gesteine aus den Molukken. 3. Gesteine von Buru Article
Sammlungen des Geologischen Reichs-Museums in Leiden. Serie 1, Beiträge zur Geologie Ost-Asiens und Australiens, 6(1), 77-127.January 1900
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Berichtigung von P. G. Krause Article
Sammlungen des Geologischen Reichs-Museums in Leiden. Serie 1, Beiträge zur Geologie Ost-Asiens und Australiens, 5(1), 316-316.January 1900
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On a peculiarly colored Stoat in the collections of the Leyden Museum Article
Notes from the Leyden Museum, 22(1/2), 25-26.January 1900
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A new species of Arius Article
Notes from the Leyden Museum, 22(1/2), 71-74.January 1900
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On a small Monacanthus Article
Notes from the Leyden Museum, 22(1/2), 126-128.January 1900
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The species of the Antelope-genus Pediotragus Article
Notes from the Leyden Museum, 22(1/2), 33-43.January 1900
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Ueber eine anscheinend neue Art Dicaeum vom ArfaK-Gebirge (Neu Guinea) Article
Notes from the Leyden Museum, 22(1/2), 70-70.January 1900
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Zoological results of the Dutch Scientific Expedition to Central Borneo Article
Notes from the Leyden Museum, 21(4), 145-276.January 1900