search query: @author Heck, Arno / total: 2
references: 1-2 / 2
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title | year | author | ||
1. |
Kompetenz
1997 : 36, p. 22-28 |
1997 | Heck, Arno |
|
2. |
Kompetenz
1996 : 31, p. 4-11 |
1996 | Heck, Arno |
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