Royalty accounting system within the U.S. Geological Survey : oversight hearings before the Subcommittee on Mines and Mining and Oversight and Investigations of the Committee on Interior and Insular Affairs, House of Representatives, Ninety seventh Congress, first session, on royalty accounting system within the U.S. Geological Survey, hearings held in Washington, D.C., September 23 and October 6, 1981.

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