Publication
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The Genus Mithrodia Gray, 1840 Article
Zoologische Verhandelingen, 2(1), 1-40.January 1948
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Nyssaceae Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 29-31.January 1948
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Trigoniaceae Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 58-60.January 1948
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Valerianaceae Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 253-254.January 1948
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Hydrocaryaceae Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 43-44.January 1948
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Juncaceae Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 210-215.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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A monograph of the Vochysiaceae ̶ I. Salvertia and Vochysia Article
Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 95(1), 397-540.January 1948