. . . . . "Recent Interior Department Inspector General investigations on federal oil and gas royalty collections oversight hearing before the Committee on Natural Resources, U.S. House of Representatives, One Hundred Tenth Congress, second session, Thursday, September 18, 2008"@en . . . . . . . . . . . "Recent Interior Department Inspector General investigations on federal oil and gas royalty collections : oversight hearing before the Committee on Natural Resources, U.S. House of Representatives, One Hundred Tenth Congress, second session, Thursday, September 18, 2008"@en . . . .