Publication
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Some preliminary notes on Surinam Sting Rays, including the description of a new species Article
Zoologische Mededelingen, 30(2), 31-47.January 1948
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New and little known Piesmidae and Tingidae (Hemiptera) Article
Zoologische Mededelingen, 30(4), 73-76.January 1948
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In memoriam H. Uittien Article
Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 96(1), 55-68.January 1948
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Studies on Malayan Blattidae Article
Zoologische Mededelingen, 29(1), 1-174.January 1948
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Punicaceae Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 226-227.January 1948
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Plumbaginaceae Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 107-112.January 1948
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Dilleniaceae Article
Flora Malesiana - Series 1, Spermatophyta, 4(1), 141-174.January 1948
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Catalogue of the Solariidae in the Rijksmuseum van Natuurlijke Historie. III. Torinia Article
Zoologische Verhandelingen, 4(1), 1-44.January 1948