search query: @instructor Kosonen, Risto / total: 8
references: 6-8 / 8
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title | year | author | ||
6. | 1989 | Helasmäki, Raimo Olavi |
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7. | 1988 | Aaltonen, Aila Helena |
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8. | 1988 | Kalliomäki, Pekka |
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