Publication
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Molluscs and Echinoderms from Palaeolithic deposits in the Rock Shelter of Ksâr'akil, Lebanon Article
Zoologische Mededelingen, 38(5), 87-99.January 1962
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New species of Malaysian ferns Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 11(2), 529-534.January 1962
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The bats of Suriname Article
Zoologische Verhandelingen, 58(1), 1-278.January 1962
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Contributions to the history of botany and exploration in Malaysia. 8—9 Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 11(2), 495-508.January 1962
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Reviews Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 11(2), 537-539.January 1962
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Viola hederacea Labill. in Malaya Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 11(2), 535-536.January 1962
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Reliquiae Kerrianae Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 11(2), 427-493.January 1962
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De in Nederland adventieve en gekweekte Physalis-soorten Article
Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland, 1(7), 65-71.January 1962