Helium [electronic resource] : hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Thirteenth Congress, first session, to consider S. 783, the Helium Stewardship Act of 2013, May 7, 2013.
Publication Info.
Washington : U.S. Government Printing Office, 2013.
Washington, DC : For sale by the Superintendent of Documents, U.S. Government Printing Office