Publication
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New Bornean Acanthaceae Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 10(1), 151-175.January 1960
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Revision of Abrus Adanson (Pap.) with special reference to Africa Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 10(2), 607-624.January 1960
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New species in Eriocaulon Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 10(1), 126-135.January 1960
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Revision of the Sapotaceae of the Malaysian area in a wider sense. XXI. Eberhardtia Lecomte Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 10(1), 118-121.January 1960
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Zur Kenntnis von Gnetum neglectum Bl Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 10(2), 431-431.January 1960
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Upper pleistocene and holocene climate and vegetation of the “Sabana de Bogota” (Colombia, South America) Article
Leidse Geologische Mededelingen, 25(1), 261-315.January 1960
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Reviews Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 10(1), 318-321.January 1960
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The geology of the upper Salat and Pallaresa Valleys, Central Pyrenees, France/Spain Article
Leidse Geologische Mededelingen, 25(1), 1-127.January 1960