search query: @instructor Heikkilä, Pertti / total: 8
references: 5-8 / 8
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title | year | author | ||
5. | 1984 | Dammert, Veikko |
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6. | 1983 | Viitala, Raimo |
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7. | 1983 | Naapuri, Jukka-Matti |
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8. | 1981 | Latva-Pukkila, Pasi |
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