Publication
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Zur Stereometrie und Entstehung der Aplit-, Granit- und Pegmatitgänge im Gebiete von Sept-Laux (Belledonne-Massiv S.L.) Article
Leidse Geologische Mededelingen, 17(1), 215-231.January 1952
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Observations sur le contact ouest du granite des Sept-Laux près du Rivier d’Allemont (Massif de Belledonne S.L.) Article
Leidse Geologische Mededelingen, 17(1), 203-206.January 1952
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Reconsideration of the so-called Oligocene fauna in the asphaltic deposits of Buton (Malay Archipelago) — 2. Young-Neogene Foraminifera and calcareous Algae Article
Leidse Geologische Mededelingen, 17(1), 259-283.January 1952
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Reconsideration of the so-called Oligocene fauna in the asphaltic deposits of Buton (Malay Archipelago) — 1. Mio-Pliocene Mollusca Article
Leidse Geologische Mededelingen, 17(1), 237-258.January 1952
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State of progress in Malaysian plant taxonomy Article
Flora Malesiana Bulletin, 9(1), 285-287.January 1952
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Note préliminaire sur la géologie du Val d’Aran Article
Leidse Geologische Mededelingen, 18(1), 272-280.January 1953
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Is Meta mengei Blackwall a variety of Meta segmentata (Clerck) ? (Aranei-Argiopidae) Article
Zoologische Mededelingen, 32(15), 155-163.January 1953
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Florae Malesianae Precursores V. Notes on Malaysian Rubiaceae Article
Blumea: Biodiversity, Evolution and Biogeography of Plants, 7(2), 329-338.January 1953