1. The path from LEO to Mars : hearing before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Twelfth Congress, second session, September 12, 2012 Author/Creator: United States. Congress. Senate. Committee on Commerce, Science, and Transportation, author Publication/Creation: Washington, DC : For sale by the Superintendent of Documents, U.S. Government Printing Office Resource Type: Book Access & Availability: Loading
2. Planetary flagship missions : Mars Rover 2020 and Europa Clipper : hearing before the Subcommittee on Space, Committee on Science, Space, and Technology, House of Representatives, One Hundred Fifteenth Congress, first session, July 18, 2017 Author/Creator: United States. Congress. House. Committee on Science, Space, and Technology (2011- ). Subcommittee on Space, author Publication/Creation: Washington, DC : For sale by the Superintendent of Documents, U.S. Government Publishing Office Resource Type: Book Access & Availability: Loading