search query: @keyword impurities / total: 8
references: 7-8 / 8
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title | year | author | ||
7. | 2002 | Leino, Taina |
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8. | 1997 | Granroth, Stefan |
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INSSI
title | year | author | ||
7. | 2002 | Leino, Taina |
||
8. | 1997 | Granroth, Stefan |