search query: @keyword nitrogen / total: 13
references: 9-13 / 13
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title | year | author | ||
9. | 2003 | Friman, Hanne |
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10. | 2002 | Mikkola, Johanna |
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11. | 2002 | Myllymaa, Tuuli-Maria |
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12. | 2001 | Vilpas, Riikka |
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13. | 1997 | Zhang, Jian |
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