Round trip trajectories with stopovers at both Mars and Venus /

Bibliographic Details

Main Authors:	Willis, Edward A. (Author), Padrutt, J. A. (Author)
Format:	Government Document eBook
Language:	English
Published:	[Washington, D.C.] : National Aeronautics and Space Administration, 1969.
Series:	NASA technical memorandum ; X-52680.
Subjects:	Space trajectories. Interplanetary voyages. Trajectories. Mars (planet) Venus (planet)
Online Access:	https://purl.fdlp.gov/GPO/gpo158316