Publication
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Biosystematic studies on Spergularia media and S. marina in the Netherlands II. The morphological variation of S. marina Article
Acta botanica neerlandica, 18(3), 467-476.January 1969
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Factor analysis as a method in synecological research Article
Acta botanica neerlandica, 18(3), 477-482.January 1969
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Meetings of the Botanical Society of the Netherlands Article
Acta botanica neerlandica, 18(3), 483-486.January 1969
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Book Reviews Article
Acta botanica neerlandica, 18(3), 487-488.January 1969
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The occurrence of Pythium in the Netherlands. II Another heterothallic species: Pythium splendens Braun Article
Acta botanica neerlandica, 18(4), 489-495.January 1969
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Pavlova mesolychnon (Chrysophyta) a new species from the Tamar estuary, Cornwall Article
Acta botanica neerlandica, 18(4), 496-510.January 1969
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Palynology of the first 30 metres of a 120 m deep section in Northern Greece Article
Acta botanica neerlandica, 18(4), 511-527.January 1969
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The influence of acropetally transported indoleacetic acid on the geotropism of intact pea roots and its modification by 2, 3, 5-triiodobenzoic acid Article
Acta botanica neerlandica, 18(4), 528-537.January 1969