Tables for computing oil royalties under the leasing act of February 25, 1920, as amended by the act of August 21, 1935,
by R.E. Spratt.
|Main Author:||Spratt, R. E.|
Washington : Govt. print. off., 1941.
Oil and gas leases
Oil and gas leases /
Oil and gas leases / United States /
At head of title: United States Department of the interior ... Geological survey.
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