search query: @instructor Laukkanen, Risto / total: 5
references: 4-5 / 5
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| title | year | author | ||
| 4. | 1982 | Puhakainen, Esa |
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| 5. | 1981 | Mäntymaa, Jukka |
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| title | year | author | ||
| 4. | 1982 | Puhakainen, Esa |
||
| 5. | 1981 | Mäntymaa, Jukka |