search query: @keyword certificate / total: 22
references: 19-22 / 22
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title | year | author | ||
19. | 1998 | Pirinen, Vesa |
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20. | 1998 | Särs, Camillo |
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21. | 1998 | Lehti, Ilari |
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22. | 1997 | Kivi, Jaakko |
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