America's helium supply : options for producing more helium from federal lands : oversight hearing before the Subcommittee on Energy and Mineral Resources of the Committee on Natural Resources, U.S. House of Representatives, One Hundred Thirteenth Congress, first session, Thursday, July 11, 2013.
|Format:||Government Document Online Book|
U.S. Government Printing Office,
|Online Access:||ONLINE VERSION|
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