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Coal policy issues hearings pursuant to S. Res. 45, a national fuels and energy policy study, Ninety-third Congress, first session on the present and future role of coal in future energy supplies
- "Coal policy issues hearings pursuant to S. Res. 45, a national fuels and energy policy study, Ninety-third Congress, first session on the present and future role of coal in future energy supplies"@en
- "Coal policy issues: hearings pursuant to S. Res. 45, a national fuels and energy policy study, Ninety-third Congress, first session on the present and future role of coal in future energy supplies"