Publication
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The taxonomic position of the genus Argamania Papp (Hymenoptera: Braconidae) Article
Zoologische Mededelingen, 65(14), 203-207.January 1991
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Editorial Article
Flora Malesiana Bulletin, 10(4), 307-307.January 1991
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The near future of Flora Malesiana Article
Flora Malesiana Bulletin, 10(4), 327-330.January 1991
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The tuberous epiphytes of the Rubiaceae 3: A revision of Myrmephytum to include Myrmedoma Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 36(1), 43-52.January 1991
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Moerasmelkdistel (Sonchus palustris L.) en Grote engelwortel (Angelica archangelica L.) langs het Twentekanaal: indicatoren van gebiedsvreemd water Article
Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland, 17(6), 138-148.January 1991
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Gaidropsarus pacificus (Temminck & Schlegel), a junior synonym of Rhinonemus cimbrius (Linnaeus) (Pisces: Gadiformes: Gadidae) Article
Zoologische Mededelingen, 65(25), 327-331.January 1991
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On two species of Archipelothelphusa Bott, 1969 (Crustacea: Decapoda: Brachyura: Sundathelphusidae) from Luzon, Philippines Article
Zoologische Mededelingen, 65(2), 13-24.January 1991
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Sporobolus (Gramineae) in Malesia Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 35(2), 393-458.January 1991