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Coal-water slurry fuel
Machine Liquidcoal.ru |Accessed 30 March 2013 in Russian. Dead link. "
Водоугольное
топливо
в пос. Ёнский" Archived May 19, 2014, at the Wayback Machine Vodougol...
9 KB (775 words) - 16:45, 18 May 2024