http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Future orbital power systems technology requirements
a symposium held at Lewis Research Center, Cleveland, Ohio, May 31 and June 1, 1978
National Aeronautics and Space Administration.
National Aeronautics and Space Administration, Scientific and Technical Information Office
Sponsored by the National Aeronautics and Space Administration.