Browse TRAIL Inventories

Developments in coal research and technology in 1937 and 1938

Hydrogenation and liquefaction of coal.

Coal paleobotany

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.


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