File:Round-trip trajectories with stopovers at both Mars and Venus.pdf
Round-trip_trajectories_with_stopovers_at_both_Mars_and_Venus.pdf (file size: 1.33 MB, MIME type: application/pdf)
Trajectories enabling stopovers at Mars and Venus prior to Earth return; 1980s timeframe
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|current||14:53, 24 March 2015||(1.33 MB)||Hofstetter||Trajectories enabling stopovers at Mars and Venus prior to Earth return; 1980s timeframe|