2
by Johansen, Paul
Published in Europa und Übersee (1961)
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5
by Wilhelm, Gerhard
Published in Unser Werk (1955)
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6
by Kosellek, Gerhard
Published in Germanoslavica (2008)
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7
by Pikulik, Lothar
Published in Euphorion (1989)
Article
8
by Koning, Henk J.
Published in Schlesien (1990)
Article
9
by Piskorski, Jan M.
Published in Roczniki Historyczne (1996)
Article