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Annual boiler yield
Theoretical bundle in English around the average annual yield of fossil fuel boilers.
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Boiler annual efficiency fossil fuels
Theoretical bundle around the average annual yield of fossil fuel boilers.
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Apollo - 50 years of the moon landing
Half a century ago, Neil Armstrong set foot on the moon. A total of twelve astronauts would be walking around on our nearest neighbor. The first moon landing kept the whole world glued to the TV set, the last flight received hardly any …
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