search query: @instructor Niskanen, Pentti / total: 7
references: 4-7 / 7
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title | year | author | ||
4. | 1989 | Grahn, Tommy |
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5. | 1983 | Brusila, Jukka |
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6. | 1981 | Kurvinen, Esko |
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7. | 1979 | Eklund, Ari Hannu |
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