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Start Over Subjects Coal ✖Remove constraint Subjects: Coal Titles The manufacture of photogenic or hydro-carbon oils, from coal and other bituminous substances, capable of supplying burning fluids ✖Remove constraint Titles: The manufacture of photogenic or hydro-carbon oils, from coal and other bituminous substances, capable of supplying burning fluids Copyright Public domain ✖Remove constraint Copyright: Public domain

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  • The manufacture of photogenic or hydro-carbon oils, from coal and other bituminous substances, capable of supplying burning fluids1