1
2
Published: Düsseldorf : Droste, 1987
Book
3
Published: Essen : Klartext-Verl, 1994
Book
4
5
6
Published: München u.a. : Saur, 1992
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7
8
9
Published: Stuttgart : Deutsche Verl.-Anst, 1962
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10
11
Published: Berlin : Mittler, 1939
Book
12
Book
13
14
15
16
Book
17