search query: @author Koehn, E. / total: 1
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title | year | author | ||
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Wirtschaft und Erziehung
1990 : OCT, VOL. 4:10, p.333-335 |
1990 | Koehn, E. |
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title | year | author | ||
1. |
Wirtschaft und Erziehung
1990 : OCT, VOL. 4:10, p.333-335 |
1990 | Koehn, E. |