http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Overview of propulsion systems for a Mars aircraft
1 online resource (124 unnumbered pages) : illustrations.
"Performing organization: National Aeronautics and Space Administration, John H. Glenn Research Center at Lewis Field"--Report documentation page.
Sponsored by the National Aeronautics and Space Administration WU-710-70-23-00 E-12541