"Decision making." . . "Astronautique États-Unis Histoire." . . . . "Astronáutica Estados Unidos Historia Fuentes." . . "Remote sensing." . . "Histories." . . "Astronautics United States History." . . "National Aeronautics and Space Administration" . . "Satellite communication." . . "Space flight United States History." . . "NASA space programs." . . "Astronáutica Estados Unidos." . . "Space missions." . . "NASA History Office" . . "Exploring the unknown : selected documents in the history of the U.S. civilian space program"@en . "Exploring the unknown : selected documents in the history of the U.S. civilian space program" . . . . "Exploring the unknown : selected documents in the history of the U.S. Civilian Space Program" . "Exploring the unknown selected documents in the history of the U.S. civilian space program"@en . . . "Selected documents in the history of the U.S. civil space program" . . . . . . . . "Exploring the unknown : selected documents in the history of the U.S. civil space program" . . . . . . . . . . . . . . "Exploring the unknown : selected documents in the history of the U.S. Civil Space Program" . . . . . . . . . . . . . . . . . . . "History" . . . . . . . . . "Research and development." . . "Management planning." . . "Space flight." . . "Economic impact." . . "Earth observations (From space)" . . "Astronautica Estados Unidos Historia." . . "Space transportation." . . "Space exploration." . . "Space programs." . .