2 ms·
http://en.wikipedia.org/wiki/Coal_gas http://en.wikipedia.org/wiki/Coal_gas Seemed to be not to hard with town gas (which was >50% hydrogen)
by KaiserPro 12y ago
http://en.wikipedia.org/wiki/Coal_gas http://en.wikipedia.org/wiki/Coal_gas
Seemed to be not to hard with town gas (which was >50% hydrogen)