1
Published: 2004
Superior document: Enthalten in Perspektive 2050 Köln, 2004 S. 67 - 96
2
Published: 2015.
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3
Published: [2015]
Superior document: Title is part of eBook package: De Gruyter DG Plus eBook-Package 2015
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4
Published: [2012]
Superior document: Title is part of eBook package: De Gruyter DGBA Business and Economics 2000 - 2014
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