Publication
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Sporobolus (Gramineae) in Malesia Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 35(2), 393-458.January 1991
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A taxonomic revision of the Asiatic genus Pentasacme (Asclepiadaceae) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 36(1), 109-121.January 1991
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The marine and continental upper Miocene of Crevillente (Alicante, Spain) Article
Scripta Geologica, 1-8.January 1991
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Review Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 35(2), 558-558.January 1991
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Boekaankondigingen Article
Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland, 17(3/4), 72-72.January 1991
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Progress in Malesian botany Article
Flora Malesiana Bulletin, 10(4), 309-312.January 1991
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Review Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 35(2), 346-346.January 1991
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Petrology of a dolerite in Netherlands offshore well G/17-2 Article
Scripta Geologica, 33-46.January 1991