Publication
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Some new species of the subfamily ‘Leptoceratoidinae’ (Ancyloceratina, Ammonoidea) in uppermost Hauterivian and lower Barremian deposits from Rumania Article
Scripta Geologica. Special Issue, 31-43.January 1999
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[Proceedings of the 4th International Workshop of the Lower Cretaceous Cephalopod Team (IGCP-Project 362) / Peter F. Rawson and Philip J. Hoedemaeker (editors)]: Substantiation of the Barremian/Aptian boundary Article
Scripta Geologica. Special Issue, 3(4), 45-81.January 1999
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The Malesian species of Melanolepis (Euphorbiaceae) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 44(2), 437-446.January 1999
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[Proceedings of the 4th International Workshop of the Lower Cretaceous Cephalopod Team (IGCP-Project 362) / Peter F. Rawson and Philip J. Hoedemaeker (editors)]: Correlation of Albian European and Tethyan ammonite zonations and the boundaries of the Albian Stage and substages; some comments Article
Scripta Geologica. Special Issue, 3(7), 129-149.January 1999
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The genus Faradaya (Labiatae) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 44(2), 321-342.January 1999
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January 1999
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The genera Cynanchum and Vincetoxicum (Apocynaceae-Asclepiadoideae) in Malesia Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 44(2), 471-495.January 1999
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Robert+Brown on Rafflesia Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 44(2), 343-350.January 1999