Publication
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Neue Subspecies von Vögeln aus Niederländisch-Indien Article
Zoologische Mededelingen, 23(7), 109-113.January 1941
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The British-Indian species of Viscum revised and compared with those of South-Eastern Asia, Malaysia, and Australia Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 4(2), 261-319.January 1941
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Miscellaneous notes on Loranthaceae, 25 Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 4(2), 259-260.January 1941
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The distribution of Korthalsella Dacrydii Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 4(2), 320-321.January 1941
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The genus Podocarpus in the Netherlands Indies Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 4(3), 359-481.January 1941
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Schmetterlinge von Madeira Article
Zoologische Mededelingen, 23(1), 1-12.January 1941
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Note on some Stomatopoda from the Atlantic Coasts of Africa and America, with the description of a new species Article
Zoologische Mededelingen, 23(3), 31-43.January 1941
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Ist im Genus Parnassius Saison-Dimorphismus anzutreffen? Article
Zoologische Mededelingen, 23(4), 44-46.January 1941