1
Book
2
Published: Berlin, 2002
Book
3
Book
4
Book
5
Published: Darmstadt : WBG, Wissenschaftliche Buchgesellschaft, 2011
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6
Published: Recklinghausen : Städtische Kunsthalle, 1981
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8
Published: Bonn, 2000
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11
Published: Andernach : Künster, 2011
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14
Article
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17
Published: Stuttgart : Metzler, 2004
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18
Published: Düsseldorf, 2001
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19
Published: Stuttgart, 1981
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20
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