Tilford, Shelby G
American NASA geophysicist, from the late 1980's Director of Earth Sciences in the Office of Space Science. In 1992 he was appointed acting Associate Administrator for Mission to Planet Earth and served until 1994.
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NASA American agency overseeing development of rockets and spacecraft. National Aeronautics and Space Administration, USA, USA. More...
Launius, Roger D, NASA Chief Historian, NASA History Office Home Page, Web Address when accessed: here.
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