search query: @keyword natural gas / total: 5
references: 1-5 / 5
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title | year | author | ||
1. | 2016 | Al, Resul |
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2. | 2013 | Künsch, Zaira |
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3. | 2010 | Nurmiranta, Jussi |
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4. | 2008 | Jännes, Lauri |
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5. | 1993 | Nygrén, Jukka |
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