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1Classmark: 235Article
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3Classmark: 271Article
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4Classmark: 271Article
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5Classmark: 271Article
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6Classmark: 2600Article
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7Classmark: 1849/1Article
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8Published in Wirtschaft und Statistik (2003)Other Authors: “…Hahlen, Johann…”
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9Published 2008Other Authors: “…Hahlen, Johann…”
Classmark: 322Book