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. 
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<br/><br/><label>LCCN: </label>gs 30000300  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radium.
<br/><br/><label>LC Class. No.: </label>KF27  / .M57 1930 
<br/><br/><label>Gov. Doc. Class. No.: </label>Y 4.M 66/1:R 11/2