Blau gas
Blau gas (German: Blaugas) is an artificial illuminating gas that is similar to propane. It is named after its inventor, Hermann Blau of Augsburg, Germany.
Blau gas (German: Blaugas) is an artificial illuminating gas that is similar to propane. It is named after its inventor, Hermann Blau of Augsburg, Germany.
Blau gas (German: Blaugas) is an artificial illuminating gas that is similar to propane. It is named after its inventor, Hermann Blau of Augsburg, Germany.
Source: Wikipedia "Blau gas" · CC BY-SA 4.0
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