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1
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2
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3Published: Mainz | Grünewald | 1968Book
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4Published: Mainz | Grünewald | 1976Book
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5Published: Mainz | Grünewald | 1979Book
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6
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7Published: Köln [u.a.] | Böhlau | 1992-Book
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8Published: Leverkusen-Opladen; Bonn | Borengässer | 1980Book
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9Published: Köln [u.a.] | Böhlau | 1982Book
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10Published: Köln [u.a.] | Böhlau | 1984Book