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November 14, 2011

  • curprev 19:2019:20, November 14, 2011Ddieffenthaler talk contribs 3,444 bytes +3,444 Created page with "<math>\eta\,</math> = efficiency [J/J] <br> <math>f\,</math> = material [Tag] <br> <math>B\,</math> = set of basic resources (coal,ng, oil, uranium ore, wind, hydro, solar, etc.…"