search query: @keyword green energy / total: 2
references: 1-2 / 2
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title | year | author | ||
1. | 2009 | Ruohosenmaa, Heini |
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2. | 2003 | Kuivanen, Jari |
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INSSI
title | year | author | ||
1. | 2009 | Ruohosenmaa, Heini |
||
2. | 2003 | Kuivanen, Jari |