Publication
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A new Podostemacea from Thailand, Polypleurella micranthera Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 8(2), 522-524.January 1957
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Rivea laotica, a new species from Indo-China (Convolvulaceae) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 8(2), 525-527.January 1957
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Revision of the Sapotacea of the Malysian area in a Winder sense. IVb. Ganua Pierre ex Dubard (2nd Supplement) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 8(2), 510-513.January 1957
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Nouveaux Lamiaires du Rijksmuseum van Natuurlijke Historie Article
Zoologische Mededelingen, 35(9), 113-123.January 1957
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Bibliography Article
Flora Malesiana Bulletin, 13(1), 575-605.January 1957
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Three new giant prehistoric rats from Flores, Lesser Sunda Islands Article
Zoologische Mededelingen, 35(21), 299-314.January 1957
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Instructions for collecting tree ferns of the family Cyatheaceae Article
Flora Malesiana Bulletin, 13(1), 567-567.January 1957
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On some Hymenoptera from the collection of Guerin-Méneville in the Leiden museum Article
Zoologische Mededelingen, 35(3), 21-31.January 1957