1
Published: Hatfield : University of Hertfordshire Press, 1999
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2
Published: Hatfield : University of Hertfordshire Press, 2006
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3
Published: Mainz : Landeszentrale für politischen Bildung Rheinland-Pfalz, 2008
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4
Published: Berlin : Edition Parabolis, 2000
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5
Published: Mainz : Landeszentrale für politischen Bildung Rheinland-Pfalz Nünnerich-Asmus, 2021
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6
Published: Frankfurt am Main : Kramer, 1986
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7
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9
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11
Published: Heidelberg : Springer, 2006
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12
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15
Published: Münster : agenda-Verl, 1993
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Published: Nürnberg, 2008
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