search query: @instructor Kettunen, Jyrki / total: 4
references: 1-4 / 4
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title | year | author | ||
1. | 1970 | Pått, Pehr-Eric |
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2. | 1969 | Mäkeläinen, Matti |
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3. | 1969 | Seppänen, Ilkka |
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4. | 1968 | Sorsa, Antti |
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