Energy critical elements : identifying research needs and strategic priorities : hearing before the Subcommittee on Energy and Environment, Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, Wednesday, December 7, 2011.
Publication Info.
Washington : U.S. Government Printing Office, 2011.
Washington, DC : For sale by the Superintendent of Documents, U.S. Government Printing Office