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