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by Potthoff, Heinrich, 1938-2021 25.01.1938-16.12.2021
Published: Düsseldorf : Droste Verlag, [1979]
© 1979
Published: Düsseldorf : Droste Verlag, [1979]
© 1979
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Published: Stuttgart : Steiner-Verl.-Wiesbaden-GmbH, 1987
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Published: Frankfurt am Main [u.a.] : Lang, 1996
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