21
Published: Göttingen : Vandenhoeck & Ruprecht, 1998
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22
Published: Paderborn [u.a.] : Schöningh, 1999
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23
Published: Potsdam : Verl. für Berlin-Brandenburg, 1999
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24
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25
Published: Berlin : Hentrich, 1996
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26
Published: Bonn : Bundeszentrale für Politische Bildung, 1999
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27
Published: Berlin [u.a.] : Dietz, 1974
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