Publication
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The occurrence of pythium in the Netherlands. III. Pythium flevoense sp.n. Article
Acta botanica neerlandica, 21(6), 633-639.January 1972
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Induction of rapid chlorophyll accumulation in dark grown seedlings. II. Photoreversibility Article
Acta botanica neerlandica, 21(6), 640-654.January 1972
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Taraxacum debrayi, espèce nouvelle de la France Article
Acta botanica neerlandica, 21(4), 436-438.January 1972
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Delimitation of Origanum scabrum Boiss. et Heldr. (Labiatae) by means of morphological criteria Article
Acta botanica neerlandica, 21(4), 439-447.January 1972
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Book Review Article
Acta botanica neerlandica, 21(4), 448-448.January 1972
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Taxonomic study on three freshwater Ulothrix species Article
Acta botanica neerlandica, 21(5), 449-480.January 1972
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The relation between the genetic determination and the ecological significance of the seed wing in Spergularia media and S. marina Article
Acta botanica neerlandica, 21(5), 481-490.January 1972
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Neue Taraxacumarten der Niederlande Article
Acta botanica neerlandica, 21(5), 491-511.January 1972