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Sonnenenergie
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Proceedings of the 3rd European Electric Propulsion Conference, Hinterzarten, 14 - 18 Oct., 74
Systems, man and cybernetics, international conference, Dallas, 2 - 4 oct., 1974
Ariane-Passagier-Satellit zur Erprobung von Ionentriebwerken, Konzeptstudie
The design of momentum wheels and solar-array drives for long-life spacecraft
Solarelectric propulsion system thermal analysis. Final rept. 27 Dec 73 - 27 Feb 75
Cruising down river on sunny afternoons in solar power boat
The role of shuttle in health car systems development for space stations