search query: @keyword lignin / total: 26
references: 23-26 / 26
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| title | year | author | ||
| 23. | 2007 | Jokela, Tuomas |
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| 24. | 2006 | Martikka, Mikko |
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| 25. | 2001 | Rosberg, Marjo |
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| 26. | 1997 | Harkki, Tiina |
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