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Gelsenkirchen: Stadt Gelsenkirchen, 1981
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Krefeld: Museum Haus Lange, 1976
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Leverkusen: Städt. Museum, 1981
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Herne: Emschertal-Museum, 1990
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Elsevier BV, 2009
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Ovid Technologies (Wolters Kluwer Health), 1992
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Springer Science and Business Media LLC, 2018
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Informa UK Limited, 2017
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Elsevier BV, 2012
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Informa UK Limited, 2022
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Springer Science and Business Media LLC, 2020
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Elsevier BV, 2020
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Informa UK Limited, 2019
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Springer Science and Business Media LLC, 2017
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Springer Science and Business Media LLC, 2016
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Public Library of Science (PLoS), 2016
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Public Library of Science (PLoS), 2013
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S. Karger AG, 2013
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Elsevier BV, 2011
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S. Karger AG, 2021