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Spangenberg, Wolfhart.
De Gruyter,,
2015,
2
Spangenberg, Wolfhart.
De Gruyter,,
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3
Spangenberg, Wolfhart.
De Gruyter,,
2019,
4
Spangenberg, Wolfhart.
De Gruyter,,
2018,
5
Spangenberg, Wolfhart.
Walter de Gruyter,,
1978,
6
Spangenberg, Wolfhart.
Walter de Gruyter,,
2018,