search query: @keyword laadunvalvonta / total: 30
references: 27-30 / 30
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title | year | author | ||
27. | 2004 | Ratilainen, Timo |
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28. | 2002 | Ylivainio, Jarmo |
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29. | 2000 | Patovirta, Juha |
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30. | 1996 | Huusko, Karri |
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