Publication
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Begoniaceae Article
Flora of the Netherlands Antilles, 2(1), 69-70.January 1966
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The numbering of Sarawak Forest Department collections Article
Flora Malesiana Bulletin, 21(1), 1432-1435.January 1966
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Piperaceae Article
Flora of the Netherlands Antilles, 2(1), 71-87.January 1966
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The East-Asiatic and Indo-Australian species of Polybioides Buysson and Parapolybia Saussure (HYM., Vespidae) Article
Zoologische Verhandelingen, 82(1), 1-42.January 1966
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Some remarks on the taxonomy of Cyanophyceae Article
Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 226(1), 57-62.January 1966
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Biological results of the snellius expedition XXII. Octocorallia from the Malay Archipelago (Part II) Article
Zoologische Verhandelingen, 80(1), 1-109.January 1966
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Parnassiidae-Typen in der Sammlung J. C. Eisner Article
Zoologische Verhandelingen, 81(1), 1-81.January 1966
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Novitates florae aegyptiacae I Article
Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 238(1), 190-192.January 1966