search query: @author Witt, R. / total: 4
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| title | year | author | ||
| 4. |
Wirtschaft und Erziehung
1990 : OCT, VOL. 4:10, p.326-329 |
1990 | Witt, R. |
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| title | year | author | ||
| 4. |
Wirtschaft und Erziehung
1990 : OCT, VOL. 4:10, p.326-329 |
1990 | Witt, R. |