search query: @author Johner, Wolfgang / total: 1
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| title | year | author | ||
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Verkauf und Marketing
1991 : 12, p. 48-49 |
1991 | Johner, Wolfgang |
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| title | year | author | ||
| 1. |
Verkauf und Marketing
1991 : 12, p. 48-49 |
1991 | Johner, Wolfgang |