search query: @instructor Olkkonen, Tauno / total: 9
references: 6-9 / 9
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title | year | author | ||
6. | 1985 | Kemppinen, Timo |
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7. | 1985 | Hyyppä, Anneli |
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8. | 1982 | Putkiranta, Juha |
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9. | 1977 | Pihamaa, Heli |
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