Petroleum. Amend general leasing act of Feb. 25, 1921, report to accompany H. R. 16589 [to amend sec. 17 and 27 of general leasing act of Feb. 25, 1920 (41 Stat. 437, U. S. C., title 30, sec. 184 and 226), as amended, relative to cooperative or unit plan of development of any single oil or gas pool or field]; submitted by Mr. Colton.

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