Mineral resources [microform] : meeting federal needs for helium : [statement of] James Duffus III, Director, Natural Resources Management Issues, Resources, Community, and Economic Development Division, before the Subcommittee on Energy and Mineral Resources, Committee on Natural Resources, House of Representatives / United States General Accounting Office (Testimony ; GAO/T-RCED-93-44)
Mineral resources [microform] : meeting federal needs for helium : [statement of] James Duffus III, Director, Natural Resources Management Issues, Resources, Community, and Economic Development Division, before the Subcommittee on Energy and Mineral Resources, Committee on Natural Resources, House of Representatives / United States General Accounting Office