search query: @instructor Ronkainen, Hannu / total: 7
references: 4-7 / 7
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title | year | author | ||
4. | 1991 | Johansson, Folke |
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5. | 1986 | Ranta, Markku |
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6. | 1983 | Leinonen, Kari |
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7. | 1980 | Stenberg, Jukka |
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