search query: @keyword oil refining / total: 7
references: 5-7 / 7
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| title | year | author | ||
| 5. | 2012 | Lampinen, Isa |
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| 6. | 2005 | Kinnunen, Heli |
||
| 7. | 1994 | Kujala, Jaakko |
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INSSI
| title | year | author | ||
| 5. | 2012 | Lampinen, Isa |
||
| 6. | 2005 | Kinnunen, Heli |
||
| 7. | 1994 | Kujala, Jaakko |