http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
constrained space exploration technology program
a review of NASA's exploration technology development program
Committee to Review NASA's Exploration Technology Development Program.
Committee to Review NASA's Exploration Technology Development Program, Aeronautics and Space Engineering Board, Division on Engineering and Physical Sciences, National Research Council of the National Academies.
Electronic reproduction. Palo Alto, Calif. : ebrary, 2013. Available via World Wide Web. Access may be limited to ebrary affiliated libraries.
National Aeronautics and Space Administration.
Exploration Technology Development Program (U.S.)