Publication
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Het verkleurzwammetje Article
Coolia, 7(1), 10-11.January 1960
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De excursie in 1960 Article
Coolia, 7(4), 42-46.January 1960
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Rhodophyllus sphagneti (R. Naveau) Kühn-Romagn. Article
Coolia, 7(2), 22-22.January 1960
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Lepiota's Article
Coolia, 6(5-6), 42-43.January 1960
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Jaarverslag 1958 Article
Coolia, 7(3), 30-32.January 1960
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Het tweede Europese Mycologische Congres Article
Coolia, 7(4), 38-38.January 1960
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Caffeic Acid, a Substance with Auxin Activity found in Extracts from Coleus rhenaltianus Article
Acta botanica neerlandica, 10(2), 190-198.January 1961
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An Addition to the Genus Phoradendron (Loranthaceae) Article
Acta botanica neerlandica, 10(2), 199-201.January 1961