search query: @instructor Haapanen, Erkki / total: 2
references: 1-2 / 2
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title | year | author | ||
1. | 1989 | Pätynen, Heimo |
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2. | 1981 | Wallin, Urpo |
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INSSI
title | year | author | ||
1. | 1989 | Pätynen, Heimo |
||
2. | 1981 | Wallin, Urpo |