Advanced transportation system studies.
Subtitle: interim final report, DRs-4,5,6
By: [Daniel Levack].
Contributors: Levack, Daniel J. H.; Rockwell International. Rocketdyne Division.; United States. National Aeronautics and Space Administration.
Series: [NASA contractor report] -- NASA CR-193864.
Publisher: Rockwell International, Rocketdyne Division; National Aeronautics and Space Administration; National Technical Information Service, distributor
Published: 1993
Place of publication: Canoga Park, Calif; [Washington, D.C; Springfield, Va
Language: eng
Format: Microform
Subjects: Space vehicles -- Propulsion systems -- Estimates
Other titles: Alternate propulsion subsystem concepts.; Program cost estimates.
Notes: "6 Apr. 1992-5 Apr. 1993."

Also available via Internet from the NASA Technical Report Server web site. Address as of 4/26/06: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19940012624%5F1994012624.pdf ; current access is available via PURL.

Microfiche. [Washington, D.C. : National Aeronautics and Space Administration], 1993. 1 microfiche.