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by Heyn, Bodo, Hipler, Bernd, Kreisel, Günter, Schreer, Heike
Published 1986
Published 1986
Springer Berlin Heidelberg
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by Schmitz-DuMont, Otto, Fendel, H., Kasper, Horst, Weissenfeld, Helga
Published 1969
Published 1969
VS Verlag für Sozialwissenschaften