Publication
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Notes on the Araceae of Suriname II Article
Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 154(1), 139-155.January 1959
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On Eumenes Arcuatus (Fabricius) and some Allied Indo-australian wasps (Hymenoptera, Vespidae) Article
Zoologische Verhandelingen, 41(1), 1-71.January 1959
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Tertiary and Quaternary sedimentation in a part of the Duero Basin Palencia, (Spain) Article
Leidse Geologische Mededelingen, 24(1), 31-180.January 1959
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Rivulid Fishes of Suriname and other Guyanas, with a prelininary Review of the Genus Rivulus Article
Studies on the Fauna of Suriname and other Guyanas, 3(1), 44-98.January 1959
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Description de nouvelles espèces de Fulgorides d'Asie et d'Afrique Article
Zoologische Mededelingen, 36(16), 267-272.January 1959
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Tumours of fishes 30. Epidermoid carcinoma of the lower lip in the cichlid Hemichromis bimaculatus Article
Beaufortia, 7(85), 199-205.January 1959
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A further extension of Elminius modestus Darwin on the west coast of France Article
Beaufortia, 7(82), 37-39.January 1959
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Distribution and ecology of the slugs Alderia modesta and Limapontia depressa in the Netherlands Article
Beaufortia, 7(81), 15-36.January 1959