https://catalogue-scientifique.canada.ca/record=1507575~S6*frc
Rechercher Douglas Aircraft Company. HSCT Concept Development Group. Advanced Commercial Programs; Rechercher United States. National Aeronautics and Space Administration. Scientific and Technical Information Program; Rechercher United States. National Aeronautics and Space Administration. Scientific and Technical Information Division; Rechercher United States. National Aeronautics and Space Administration. Scientific and Technical Information Office; Rechercher Langley Research Center
NASA, Scientific and Technical Information Division, 1991
Publication gouvernementale