Publication
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Stylasterina in the collection of the Paris museum : III. Stylaster flabelliformis (Lamarck) Article
Zoologische Mededelingen, 35(19), 261-282.January 1957
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On a collection of East Asian fishes Article
Zoologische Mededelingen, 35(7), 69-78.January 1957
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Notes on the Primates of Suriname Article
Studies on the Fauna of Suriname and other Guyanas, 1(1), 13-40.January 1957
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The Zoological Exploration of Suriname Article
Studies on the Fauna of Suriname and other Guyanas, 1(1), 1-12.January 1957
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Zoological Results of a Collecting Journey to Yugoslavia, 1954. 1. Introduction and List of Collecting Stations Article
Beaufortia, 5(58), 149-156.January 1957
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Description d’un Symphurus inédit, fruit de la croisière 1899—1900 du Siboga Article
Beaufortia, 5(62), 183-185.January 1957
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Zoological Results of a Collecting Journey to Yugoslavia, 1954. 4. Wassermilben Article
Beaufortia, 5(61), 179-181.January 1957
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Observations on the Populations of Plankton and Microorganisms in an old Branch cut off from the River Waal Article
Beaufortia, 5(64), 205-221.January 1957