Publication
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Phyteuma nigrum F.W. Schmidt en P. spicatum L. in Nederland Article
Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland, 15(1), 6-27.January 1989
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Mededeling Article
Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland, 15(4), 128-128.January 1989
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Research and publications Article
Flora Malesiana Bulletin, 10(2), 121-124.January 1989
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Reviews Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 34(1), 20-20.January 1989
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Two new species of Gnathia Leach from coral reefs at Moorea, Society Islands, with redescription of Gnathia margaritarum Monod, 1926 from Panama Pacific (Isopoda: Cymothoidea: Gnathiidae) Article
Bulletin Zoologisch Museum, 12(3), 65-78.January 1989
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Potentilla (Rosaceae) in New Guinea: Census, key, and some new taxa Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 34(1), 143-160.January 1989
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A revision of Neonauclea (Rubiaceae) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 34(1), 177-275.January 1989
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Gammarus leopoliensis nov. sp. (Crustacea, Amphipoda) from eastern Carpathians Article
Bulletin Zoologisch Museum, 11(23), 185-193.January 1989