. . . "Strategic and Critical Minerals Act of 1990 : hearing before the Subcommittee on Mineral Resources, Development, and Production of the Committee on Energy and Natural Resources, United States Senate, One Hundred First Congress, second session on H.R. 4111 to amend the Mining and Mineral Resources Research Institute Act of 1984, and for other purposes, September 21, 1990" . "Strategic and Critical Minerals Act of 1990 hearing before the Subcommittee on Mineral Resources, Development, and Production of the Committee on Energy and Natural Resources, United States Senate, One Hundred First Congress, second session on H.R. 4111 to amend the Mining and Mineral Resources Research Institute Act of 1984, and for other purposes, September 21, 1990"@en . . . . "Strategic and Critical Minerals Act of 1990 : hearing before the Subcommittee on Mineral Resources Development and Production of the Committee on Energy and Natural Resources, United States Senate, One Hundred First Congress, second session, on H.R. 4111 ... September 21, 1990"@en . . . . . . . . . . . . "Strategic and Critical Minerals Act of 1990 hearing before the Subcommittee on Mineral Resources Development and Production of the Committee on Energy and Natural Resources, United States Senate, One Hundred First Congress, second session, on H.R. 4111 ... September 21, 1990"@en . . . .