Publication
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The Tree-Ferns of the genus Cyathea in Australasia and the Pacific Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 12(2), 241-274.January 1964
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Florae Malesianae Precursores XXXIX. Supplementary notes towards the knowledge of the Ericaceae in Malesia II Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 12(2), 339-347.January 1964
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Parnassiana nova : XXXV. Nachträgliche Betrachtungen zu der Revision der Subfamilie Parnassiinae (Fortsetzung 8) Article
Zoologische Mededelingen, 40(5), 25-27.January 1964
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Florae Malesianae Precursores XXXVIII. Notes on Pisonia L. in the Old World (Nyctaginaceae) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 12(2), 275-284.January 1964
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De Nederlandse soorten van het genus Cyphon paykull (Coleoptera, Helodidae) Article
Zoologische Bijdragen, 7(1), 3-16.January 1964
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Some Gomphidae and their larvae, chiefly from the Malay Peninsula (Odonata) Article
Zoologische Verhandelingen, 69(1), 1-38.January 1964
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Further records and descriptions of the species of Bactra Stephens (Lepidoptera, Tortricidae) Article
Zoologische Verhandelingen, 70(1), 1-81.January 1964
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The Morphology of Glyptholaspis Confusa (FOÀ, 1900) (Acarida, Gamasina) Article
Zoologische Verhandelingen, 71(1), 1-56.January 1964