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Institutio astronomica, juxta hypotheseis tam veterum quam Copernici & Tychonis
Geschichte der Raumfahrt bis 1970 : vom Wettlauf ins All bis zur Mondlandung
Planetology : Future Explorations
Mars Exploration : a Step Forward
Proceedings for the Second Symposium on Space Economy, Space Law and Space Sciences
Autonomous Trajectory Planning and Guidance Control for Launch Vehicles