To Encourage the Mining of Coal, Oil, Gas, Etc., on the Public Domain: Hearing Before a Subcommittee of the Committee on Public Lands, United States Senate, Sixty-third Congress, Second Session, on S. 4898, a Bill to Encourage and Promote the Mining of Coal, Phosphate, Oil, Gas, Potassium, and Sodium, on the Public Domain. May 25, 1914 ...
United States. Congress. Senate. Committee on Public Lands
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