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 Publication/Creation: Washington, District of Columbia : For sale by the Superintendent of Documents, U.S. Government Printing Office, [date of publication not identified] Resource Type: Book Access & Availability: Loading
2. 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 : U.S. Government Printing Office, 2013 Resource Type: Book Access & Availability: Loading
3. 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