01020cam a22002291 4500 gs 30000300 DLC 20260227111335.0 800425s1930 dcua f000 0 eng c gs 30000300 (OCoLC)6244104 Library, U.S. Geological Survey OCl OCoLC DLC KF27 .M57 1930 Y 4.M 66/1:R 11/2 United States. Congress. House. Committee on Mines and Mining. Manufacture of one gram of radium : hearing before a subcommittee of the Committee on Mines and Mining, House of Representatives, Seventy-first Congress, second session, on H.R. 4811. February 11, 25, and March 4, 11, 25, 1930. Washington, U.S. Govt. print. off., 1930. 70 p. : incl. tables. ; 24 cm. Available also in microform in CIS US congressional committee hearings, accession number H548-13. Radium. United States. 71st Cong., 2d sess., 1929-1930. H.R. 4811. 26829 26829