search query: @keyword niobium / total: 5
references: 2-5 / 5
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title | year | author | ||
2. | 2006 | Kärkkäinen, Vilma |
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3. | 2003 | Koskela, Maija |
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4. | 2000 | Finne, Antti |
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5. | 1995 | Turkia, Minna |
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