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by Abels, Heinz, Honig, Michael-Sebastian, Saake, Irmhild, Weymann, Ansgar
Published 2008
Published 2008
VS Verlag für Sozialwissenschaften
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by Greca, Rainer, Schäfferling, Stefan, Siebenhüter, Sandra
Published 2009
Published 2009
VS Verlag für Sozialwissenschaften