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Published: Essen : Klartext-Verl, 1990.
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Published: Baden-Baden : Nomos-Verl.-Ges, 1993
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Published: [Bonn] : Bundesminist. f. Gesamtdt. Fragen, 1962.
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Published: Bad Neustadt a.d. Saale : Pfaehler, 1983.
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