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1Classmark: 39/6Article
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2
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3Classmark: 39/21Article
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4Classmark: 39/21Article
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5Classmark: 39/21Article
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7by Janssen, Simon, Leber, Ute, Atntz, Melanie, Gregory, Terry, Zierahn, Ulrich
Published in IAB-kurzbericht (2018)Classmark: 39/21Article