Petroleum. Amending oil and gas leasing act of 1920, hearings, 74th Congress, 1st session, on H. R. 5530 (H. R. 8289), to amend act to promote mining of coal, phosphate, oil, oil shale, gas, and sodium on public domain (41 Stat. 437, U. S. C., title 30, sees. 185. 221, 223, and 226) as amended [relating to oil and gas], Apr. 15-23, 1935.

Tools