search query: @instructor Laakso, Lenni / total: 11
references: 10-11 / 11
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| title | year | author | ||
| 10. | 1981 | Helin, Seppo |
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| 11. | 1977 | Harju, Terho Toivo |
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INSSI
| title | year | author | ||
| 10. | 1981 | Helin, Seppo |
||
| 11. | 1977 | Harju, Terho Toivo |