Publication
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Experiments in connection with Salt Domes Article
Leidse Geologische Mededelingen, 3(1), 151-182.January 1928
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Beiträge zur Kenntnis der mesozoischen Korallenfaunen von Südamerika Article
Leidse Geologische Mededelingen, 3(1), 1-16.January 1928
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Ein Neues Argonautiden-Geschlecht von Sumatra Article
Leidse Geologische Mededelingen, 3(1), 221-226.January 1928
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Personal ideas about the application of the International Rules of Nomenclature, or, as with the Rules themselves, International deliberation? II. Some denominations of Dicotyledonous Trees and Shrubs species. With a Retrospection and a set of Propositions on the Nomenclature-Rules Article
Mededeelingen van 's Rijks Herbarium, Leiden, 56(1), 1-77.January 1928
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Personal ideas about the application of the international rules of nomenclature, or, as with the rules themselves, international deliberation? Some denominations of Conifer-species Article
Mededeelingen van 's Rijks Herbarium, Leiden, 55(1), 1-76.January 1928
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A critical revision of the Genus Aristida being a preliminary study and an introduction to the monograph Article
Mededeelingen van 's Rijks Herbarium, Leiden, 54B(1), 465-701.January 1928
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Ueber Einige Scyphomedusen aus dem Zoologischen Museum in Amsterdam Article
Zoologische Mededelingen, 12(9), 195-216.January 1929
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De Heterocera van Sumatra VI Article
Zoologische Mededelingen, 12(6), 28-136.January 1929