To further amend the Act approved February 25, 1920, entitled "An act to promote the mining of coal, phosphate, oil, oil shale, gas, and sodium on the public domain ... by William Robb Eaton, United States. Congress. House. Committee on public lands

To further amend the Act approved February 25, 1920, entitled "An act to promote the mining of coal, phosphate, oil, oil shale, gas, and sodium on the public domain ...