search query: @instructor Österman / total: 14
references: 13-14 / 14
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title | year | author | ||
13. | 1967 | Heininen, Jaakko |
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14. | 1964 | Pihlaja, Tapani |
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INSSI
title | year | author | ||
13. | 1967 | Heininen, Jaakko |
||
14. | 1964 | Pihlaja, Tapani |