Publication
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Revision of the Amathusiidae in the Museums at Leiden and at Amsterdam Article
Zoologische Mededelingen, 23(10), 171-216.January 1942
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Linckia rosenbergi Von Martens, a Synonym of L. laevigata (L.) Article
Zoologische Mededelingen, 23(14), 273-274.January 1942
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The Free Living Nematodes of the Mediterranean III. The Balearic Islands Article
Zoologische Mededelingen, 23(12), 229-262.January 1942
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Einige Ergebnisse der Sichtung der Gattungen Melitaea und Argynnis im Rijksmuseum van Natuurlijke Historie, Leiden Article
Zoologische Mededelingen, 24(4), 116-124.January 1942
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Catalogue of the Solariidae in the Rijksmuseum van Natuurlijke Historie : II. Philippia Article
Zoologische Mededelingen, 24(1), 1-17.January 1942
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On the occurrence of Helicigona lapicida (L.) (Mollusca, Gastropoda) in the Netherlands Article
Zoologische Mededelingen, 24(11), 276-280.January 1942
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On the Arrangement of the scales on the dorsal surface of the digits in Lygosoma and allied genera Article
Zoologische Mededelingen, 24(6), 153-158.January 1942
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The Free Living Nematodes of the Mediterranean II. The Camargue Article
Zoologische Mededelingen, 23(11), 217-228.January 1942