search query: @author Sparrer, Petra / total: 1
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| title | year | author | ||
| 1. |
Lernfeld Betrieb
1994 : 1, p. 32-33 |
1994 | Sparrer, Petra |
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| title | year | author | ||
| 1. |
Lernfeld Betrieb
1994 : 1, p. 32-33 |
1994 | Sparrer, Petra |