APA

United States, . (19731974). Coal policy issues: hearings pursuant to S. Res. 45, National fuels and energy policy study, 93d Congress, 1st session, on present and future role of coal in future energy supplies. [Washington, D.C.]: .

Chicago

United States, . 19731974. Coal policy issues: hearings pursuant to S. Res. 45, National fuels and energy policy study, 93d Congress, 1st session, on present and future role of coal in future energy supplies. [Washington, D.C.]: .

Harvard

United States, . (19731974). Coal policy issues: hearings pursuant to S. Res. 45, National fuels and energy policy study, 93d Congress, 1st session, on present and future role of coal in future energy supplies. [Washington, D.C.]: .

MLA

United States, . Coal policy issues: hearings pursuant to S. Res. 45, National fuels and energy policy study, 93d Congress, 1st session, on present and future role of coal in future energy supplies. [Washington, D.C.]: . 19731974.