http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
the new transportation system and its utilization
AAS/DGLR Symposium 1980 : Hanover, Germany)
Deutsche Gesellschaft für Luft- und Raumfahrt
edited by Dietrich E. Koelle and George V. Butler.
Proceedings of the third DGLR/AAS Symposium, held April 28-30, Hannover, Germany.
An American Astronautical Society publication
Advances in astronautical sciences ; v. 43