Past, present and future of the federal helium program; and H.R. 527, Responsible Helium Administration and Stewardship Act : oversight and legislative hearing before the Committee on Natural Resources, U.S. House of Representatives, One Hundred Thirteenth Congress, first session, Thursday, February 14, 2013.
|Format:||Government Document Online Book|
U.S. Government Printing Office,
|Online Access:||ONLINE VERSION|
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