Publication
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Plant-maps for the Netherlands 1:3.000.000. Part I. Compiled by „The Institute for the Investigation of the Vegetation in the Netherlands” (I.V.O.N.) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 2(1), 1-23.January 1935
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The Malaysian genus Rigiolepis Hooker F Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 1(2), 323-342.January 1935
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Catalogue of the Coreidae in the Rijksmuseum van Natuurlijke Historie : Part II. Coreinae, first part Article
Zoologische Mededelingen, 18(8), 181-227.January 1935
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The Compositae of the Malay Archipelago. I. Vernonieae and Eupatorieae Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 1(3), 351-536.January 1935
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Grammatical objections to the International Rules of Botanical Nomenclature, adopted at Cambridge in 1930 Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 1(2), 295-304.January 1935
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Alte und neue indomalayische Noctuiden (Lepidoptera Heterocera) aus dem Leidener Museum Article
Zoologische Mededelingen, 18(15), 269-280.January 1935
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A Monograph on the Orbitoididae, occurring in the Tertiary of America Article
Leidse Geologische Mededelingen, 7(1), 221-272.January 1935
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A collection of sawflies ( Hymenoptera Symphyta) from Java Article
Zoologische Mededelingen, 18(7), 167-180.January 1935