Publication
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The shell and its shape in Cavoliniidae (Pteropoda, Gastropoda) Article
Beaufortia, 15(206), 185-189.January 1968
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Descriptions of three new genera of Olethreutinae (Lepidoptera, Tortricidae) Article
Beaufortia, 15(189), 69-77.January 1968
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Fifty years of ”Comité ter bestudering van de Molluskenfauna in Nederland” Article
Beaufortia, 15(187), 57-62.January 1968
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Helminth and sporozoan parasites of fishes in the Netherlands Article
Bulletin Zoologisch Museum, 1(8), 83-87.January 1968
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Morphological observations with systematic implications on some palaeozoic Rhynchonellida from Europe, with special emphasis on the Uncinulidae Article
Leidse Geologische Mededelingen, 41(1), 1-82.January 1968
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Geology of the Upper Ribagorzana and Tor valleys, Central Pyrenees, Spain Sheet 8, 1 : 50,000 Article
Leidse Geologische Mededelingen, 41(1), 229-292.January 1968
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Geology of the Leonides between the Bernesga and Porma rivers, Cantabrian Mountains, NW Spain Article
Leidse Geologische Mededelingen, 41(1), 83-151.January 1968
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Catalogue of the Coleoptera Cetoniidae in the Leiden museum : 1. Goliathus Lamarck, sensu lato Article
Zoologische Mededelingen, 43(3), 19-40.January 1968