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Published: Mainz : Hase & Koehler, 1966
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Published: Bad Godesberg : Hohwacht-Verl
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Published: Stuttgart ; Berlin [u.a.] : Kohlhammer, 1980
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by Noelle-Neumann, Elisabeth, 1916-2010 1916-2010
Published: Allensbach : Inst. für Demoskopie, 1984
Published: Allensbach : Inst. für Demoskopie, 1984
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