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Published: Bad Godesberg : Forschungsinstitut der Friedrich-Ebert-Stiftung, 1967
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Published: Bad Godesberg : Forschungsinst. d. Friedrich-Ebert-Stiftung, 1965
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Published: Chicago, Ill. : Univ. of Chicago Press, 1992
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Published: Asnières : Publ. de l'Inst. d'Allemand, 1998
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Published: Regensburg : Pustet, 1987
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