search query: @instructor Porra, Veikko / total: 4
references: 1-4 / 4
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title | year | author | ||
1. | 1995 | Koli, Kimmo |
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2. | 1973 | Ilmonen, Matti |
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3. | 1971 | Suominen, Olli Reijo |
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4. | 1967 | Helameri, Kalle Sakari |
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