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- Hydrogenation and liquefaction of coal.
- Technical and economic study of drying lignite and subbituminous coal by the Fleissner process
- Hydrogenation and liquefaction of coal.
- Hydrogenation and liquefaction of coal.
- Hydrogenation and liquefaction of coal.
- Bureau of Mines research on the hydrogenation and liquefaction of coal and lignite
- Hydrogenation and liquefaction of coal.
- Effects of moisture on float-and-sink testing of lignite