Publication
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Water and marsh plants in the artificial Brokopondo Lake (Surinam, S. America) during the first three years of its existence Article
Acta botanica neerlandica, 17(3), 183-196.January 1968
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Identity of floral hormones in Xanthium strumarium L. and Silene armeria L. Article
Acta botanica neerlandica, 17(3), 197-198.January 1968
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Effect of the counter-ion on the uptake of potassium in excised barley roots Article
Acta botanica neerlandica, 17(4), 313-319.January 1968
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The occurence of Pythium in the Netherlands. I. Heterothallic species Article
Acta botanica neerlandica, 17(4), 320-329.January 1968
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Meetings of the Botanical Society of the Netherlands Article
Acta botanica neerlandica, 17(4), 330-331.January 1968
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Book Review Article
Acta botanica neerlandica, 17(4), 332-332.January 1968
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A contribution to the phytogeography of the Angmagssalik area, East Greenland, with special reference to Chionophily Article
Acta botanica neerlandica, 17(5), 333-339.January 1968
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Bryophytes collected during a Dutch botanical East Greenland expedition to the Angmagssalik area in 1966 Article
Acta botanica neerlandica, 17(5), 340-344.January 1968