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1
by Gschnitzer, Franz
Published 1963
Springer Berlin Heidelberg
Subjects: “...Popular Science, general...”
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2
by Regensburger, Reinhold
Published 1929
Springer Berlin Heidelberg
Subjects: “...Popular Science, general...”
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3
by Rhein.-Westf. Akad. d. Wiss., NA.
Published 1975
VS Verlag für Sozialwissenschaften
Subjects: “...Popular Science, general...”