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Date: 2012-04-30 15:30:15Explorer program United States Goddard Space Flight Center Greenbelt Maryland Robert H. Goddard Vanguard NASA Homer E. Newell Jr. Space exploration Spaceflight Space technology Project Vanguard | I\JI\SI\ Natoonal Aeronautocs and Space Admonostratoon Vol. 34 No. 3Add to Reading ListSource URL: library01.gsfc.nasa.govDownload Document from Source WebsiteFile Size: 849,17 KBShare Document on Facebook |