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Systemprinzipien fuer die Analyse einer Industrialisierung des Weltraums
Ariane-Passagier-Satellit zur Erprobung von Ionentriebwerken, Konzeptstudie
Solarelectric propulsion system thermal analysis. Final rept. 27 Dec 73 - 27 Feb 75
Satellite mounted tracking optics to continuously pump sun-pumped laser
Assessment of total energy systems for the department of defense. Volume 1. (Final rept.)