Publication
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Protium Burman f Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 7(1), 154-160.January 1952
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Hymenosporum in New Guinea (Pittosporaceae) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 7(1), 292-292.January 1952
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Obituary Dr A. W. Kloos (1880—1952) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 7(1), 303-304.January 1952
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A monograph of the genus Isonandra Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 6(3), 547-579.January 1952
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Late-glacial flora and periglacial phenomena in the Netherlands Article
Leidse Geologische Mededelingen, 17(1), 71-183.January 1952
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Preliminary account of Papuan Nothofagus Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 7(1), 146-147.January 1952
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Revision of the Lichens of the Netherlands. II. Physciaceae Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 7(1), 206-287.January 1952
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Reviews Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 6(3), 596-598.January 1952