Publication
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Heaths and inland dunes of the Veluwe Article
Wentia, 2(1), 1-96.January 1959
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De Vogelwarte Helgoland Article
Het Vogeljaar, 7(1), 103-104.January 1959
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Bespuitingen en vogelstand (II) Article
Het Vogeljaar, 7(1), 104-106.January 1959
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A new Species of Rhyncholacis (Podostemaceae) Article
Acta botanica neerlandica, 8(4), 477-478.January 1959
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A Species of Antirhea (Rubiaceae) from Suriname Article
Acta botanica neerlandica, 8(4), 479-481.January 1959
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A new Staurogyne from the Territory of Papua Article
Acta botanica neerlandica, 8(4), 482-483.January 1959
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A Key to the Species of Halophila (Hydrocharitaceae), with Descriptions of the American Species Article
Acta botanica neerlandica, 8(4), 484-489.January 1959
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Cellophane as a Medium to study the Cellulose Decomposition in Forest Soils Article
Acta botanica neerlandica, 8(4), 490-491.January 1959