search query: @instructor Pelkonen, Markku / total: 25
references: 23-25 / 25
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| title | year | author | ||
| 23. | 1992 | Tanskanen, Juha-Heikki |
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| 24. | 1992 | Meriluoto, Jukka |
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| 25. | 1990 | Renko, Esa |
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