search query: @instructor Virtanen, Pekka V. / total: 5
references: 1-5 / 5
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title | year | author | ||
1. | 1992 | Vesala, Riitta |
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2. | 1990 | Torkkeli, Outi |
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3. | 1989 | Pihala, Anita |
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4. | 1988 | Kotiranta, Eija |
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5. | 1988 | Paunula, Ilkka |
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