The Origin of Gravity-Propelled Interplanetary Space Travel
History symposium; 24th, International Academy of Astronautics: History of rocketry and astronautics ; 1990 ; Dresden; Germany
01.01.1997
42 pages
Held in conjunction with 1990 International Astronautical Federation congress
Aufsatz (Konferenz)
Englisch
IAA , rocketry , astronautics , IAF
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