Publication
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Revision of the Lichens of the Netherlands. II. Physciaceae Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 7(1), 206-287.January 1952
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Reviews Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 6(3), 596-598.January 1952
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Some Notes on the Genus Lepas Linné, 1767. (Subphylum Crustacea; Classis Cirripedia; Ordo Thoracica; Fam. Lepadidae.) Article
Beaufortia, 1(14), 1-6.January 1952
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On the occurrence of Alderia modesta (Lovén) and Limapontia depressa A. & H. on the salt marshes of the Dutch Waddenzee Article
Beaufortia, 2(19), 1-3.January 1952
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Lengte- en breedtevariatie bij eieren van de Kokmeeuw, Larus ridibundus L Article
Beaufortia, 1(11), 1-6.January 1952
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Dilatys sumatransnus, a new Earwig from Sumatra Article
Zoologische Mededelingen, 31(24), 259-263.January 1952
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Identificatie van natuurlijke alkaliveldspaten met behulp van röntgen-poederdiagrammen Article
Leidse Geologische Mededelingen, 17(1), 1-69.January 1952
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Novitates Burseracearum II Article
Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 110(1), 244-249.January 1952