Publication
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Plecospondylic spinal column in the viviparous Cyprinodont Lebistes reticulatus (Peters) Article
Beaufortia, 5(42), 1-9.January 1955
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On a new and interesting Globe-fish from New Guinea Article
Beaufortia, 5(48), 53-54.January 1955
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De stand van de ooievaar, Ciconia c. ciconia (Linné), in Nederland in 1950 (The status of the White Stork in the Netherlands in the year 1950) Article
Beaufortia, 5(45), 23-44.January 1955
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Trocheta bykowskii Gedroyć, 1912, in the Netherlands Article
Beaufortia, 5(43), 11-13.January 1955
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Zum Vorkommen von Kalkglimmern (Margarit, Cintonit) in den Schweizer Alpen Article
Leidse Geologische Mededelingen, 20(1), 165-170.January 1955
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Pseudotectites from Colombia and Peru Article
Leidse Geologische Mededelingen, 20(1), 151-164.January 1955
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On the supposed Upper Paleozoic unconformity in North Sumatra Article
Leidse Geologische Mededelingen, 20(1), 120-134.January 1955
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Archidiskodon planifrons (Falconer et Cautley) from the Tatrot zone of the Upper Siwaliks Article
Leidse Geologische Mededelingen, 20(1), 110-119.January 1955