Publication
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Een nieuwe muurvaren in Nederland: Asplenium fontanum (L.) Bernh. (Genaalde streepvaren) Article
Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland, 16(4), 101-106.January 1990
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Conspectus of Myristica (Myristicaceae) indigenous in the Moluccas Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 35(1), 233-260.January 1990
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A review of the parasitic mite family Psorergatidae (Cheyletoidea: Prostigmata: Acari) with hypotheses on the phylogenetic relationships of species and species groups Article
Zoologische Verhandelingen, 259(1), 1-69.January 1990
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C. A. Cogniaux (1841—1916) Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 35(1), 1-3.January 1990
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Some unsolved problems concerning copepods associated with marine invertebrates Article
Bijdragen tot de dierkunde, 60(3/4), 305-309.January 1990
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Revision of the subtribe Pseudohelconina nov. (Hymenoptera: Braconidae) Article
Zoologische Mededelingen, 63(22), 283-308.January 1990
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New distribution data for Podocnemis erythrocephala (Spix) with remarks on some other turtle taxa (Reptilia: Chelonia: Pelomedusidae) Article
Zoologische Mededelingen, 64(2), 21-24.January 1990
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Some remarks on the genus Echinogammarus Stebbing, 1899 with description of a new species E. valedictus from Algeria (Crustacea, Amphipoda) Article
Bijdragen tot de dierkunde, 60(3/4), 263-269.January 1990