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by Rest, Walter, Brose, Karl, Heitkämper, Peter, Neumann, Siegfried
Published 1977
Published 1977
VS Verlag für Sozialwissenschaften
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by Gipper, Helmut, Schwarz, Hans, Beckers, Hartmut, Franke, Kristina
Published 1962
Published 1962
VS Verlag für Sozialwissenschaften