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by Valk, Giselherr, Berndt, Hans-Joachim, Roth-Walraf, Hans-Albrecht, Bossmann, Adelgund
Published 1980
Published 1980
VS Verlag für Sozialwissenschaften
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by Dettmering, Wilhelm, Bitterlich, Walter, Grahl, Klaus
Published 1974
Published 1974
VS Verlag für Sozialwissenschaften