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Material science : building the future : joint hearing before the Subcommittee on Energy & Subcommittee on Research and Technology, Committee on Science, Space, and Technology, House of Representatives, One Hundred Fifteenth Congress, first session, June 28, 2017.

Overview of science and technology research and development programs and priorities at the Department of Homeland Security: hearing before the Subcommittee on Technology and Innovation, Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, March 15, 2011.