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2
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Published: Melle : Knoth, 1983
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5
Published: Bonn : Europa-Union-Verl, 1989
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9
Published: Baden-Baden : Nomos-Verl.-Ges, 1986
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10
Published: Bonn : Bouvier, 1993
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13
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17
Published: München [u.a.] : Oldenbourg, 1980
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18
Published: Bonn : Bouvier, 1994
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19
Published: München : Lurz, 1976
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20
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