Publication
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On a remarquable fresh-water Polychaete "Nereis nouhuysi" from the East-Indies Article
Zoologische Mededelingen, 4(9), 143-145.January 1918
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A contribution towards our knowledge of the Polychaeta of South Africa Article
Zoologische Mededelingen, 4(5), 63-66.January 1918
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Over de vinvisschen in de landen om de Noordzee gestrand tusschen de jaren 1306-1918 Article
Zoologische Mededelingen, 4(14), 179-245.January 1918
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Over Malleus Vulgaris op Ameland gevonden en eenige opmerkingen over de schelpenfauna aldaar Article
Zoologische Mededelingen, 4(17), 254-255.January 1918
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A new Cethosia-form from Boeton Article
Zoologische Mededelingen, 4(18), 256-257.January 1918
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The Grapsoid genus Pyxidognathus A. Milne-Edwards, with description of a new species Article
Zoologische Mededelingen, 4(12), 167-177.January 1918
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Coprides nouveaux de la région éthiopienne et remarques diverses Article
Zoologische Mededelingen, 4(10), 146-158.January 1918
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Alte und neue Isopoden Article
Zoologische Mededelingen, 4(8), 103-142.January 1918