search query: @author Penttilä, Hannu / total: 3
references: 2-3 / 3
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| title | year | author | ||
| 2. | 1988 | Penttilä, Hannu |
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| 3. | 1979 | Penttilä, Hannu |
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| title | year | author | ||
| 2. | 1988 | Penttilä, Hannu |
||
| 3. | 1979 | Penttilä, Hannu |