search query: @instructor Pirhonen, Tauno / total: 3
references: 1-3 / 3
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| title | year | author | ||
| 1. | 1989 | Jyränoja, Jukka |
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| 2. | 1985 | Hyyppä, Anneli |
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| 3. | 1983 | Putkiranta, Seppo Antero |
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