Publication
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Prehistoric teeth of man and of the orang-utan from Central Sumatra, with notes on the fossil orang-utan from Java and Southern China Article
Zoologische Mededelingen, 29(2), 175-301.January 1948
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Amphipods from Curaçao, Bonaire, Aruba and Margarita Article
Studies on the Fauna of Curaçao and other Caribbean Islands, 3(1), 1-20.January 1948
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Land and fresh water decapod crustacea from the Leeward Group and northern South America Article
Studies on the Fauna of Curaçao and other Caribbean Islands, 3(1), 21-28.January 1948
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Pseudoscorpions of the genera Garypus, Pseudochthonius, Tyrannochthonius and Pachychitra Article
Studies on the Fauna of Curaçao and other Caribbean Islands, 3(1), 29-77.January 1948
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Frogs from the Leeward group, Venezuela and eastern Colombia Article
Studies on the Fauna of Curaçao and other Caribbean Islands, 3(1), 89-96.January 1948
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Aponogetonaceae Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 11-12.January 1948
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Index to scientific plant names Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 601-631.January 1948
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Stackhousiaceae Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 35-36.January 1948