search query: @keyword oxygen / total: 9
references: 6-9 / 9
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title | year | author | ||
6. | 2007 | Pursiainen, Vesa |
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7. | 2005 | Blomqvist, Janne |
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8. | 1999 | Laitinen, Raimo |
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9. | 1999 | Hakkila, Kirsi |
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