Title
U.S. human exploration goals and commercial space competitiveness : hearing before the Subcommittee on Space, Science, and Competitiveness of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Fourteenth Congress, first session, February 24, 2015.
Other formats
Online version: United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Space, Science, and Competitiveness. U.S. human exploration goals and commercial space competitiveness