Publication
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The alpine flora of Mount Wilhelm (New Guinea) Article
Blumea. Supplement, 4(1), 220-238.January 1958
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The genus Rhododendron L. in Indochina and Siam Article
Blumea. Supplement, 4(1), 39-59.January 1958
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Une espèce nouvelle de Decarydendron (Monimiaceae) Article
Blumea. Supplement, 4(1), 28-31.January 1958
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Nematodes of the genus Ozolaimus in West Indian Iguanas Article
Studies on the Fauna of Curaçao and other Caribbean Islands, 8(1), 127-145.January 1958
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Palynology of the Miocene browncoal mined at haanrade (Limburg. Netherlands) Article
Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 147(1), 445-488.January 1958
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Revision of the Sapotaceae of the Malaysian area in a wider sense. XIII. Chrysophyllum L Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 9(1), 21-74.January 1958
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West Indian Crabs of the genus Calappa, with a description of three new species Article
Studies on the Fauna of Curaçao and other Caribbean Islands, 8(1), 146-186.January 1958
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On an extinct species of the genus Varanus (Reptilia, Sauria) from the island of Flores Article
Zoologische Mededelingen, 36(7), 113-125.January 1958