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Critical materials : factors affecting self-sufficiency within nations of the Western Hemisphere : economic status--investment climate, 1st session, 84th Congress, supplement to Senate report 1627 of the 83d Congress, made by the Minerals, Materials, and Fuels Economic Subcommittee of the Committee on Interior and Insular Affairs, pursuant to S. Res. 271, 83d Congress, a resolution to investigate the accessibility and availability of supplies of critical raw materials. |
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