search query: @instructor Ylönen, Heikki / total: 3
references: 1-3 / 3
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| title | year | author | ||
| 1. | 1988 | Ruha, Pertti |
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| 2. | 1983 | Hausalo, Rauno |
||
| 3. | 1981 | Suhonen, Riitta |
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INSSI
| title | year | author | ||
| 1. | 1988 | Ruha, Pertti |
||
| 2. | 1983 | Hausalo, Rauno |
||
| 3. | 1981 | Suhonen, Riitta |