John S. Lewis Research Paper

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John S. Lewis had many jobs when he was older , these are few of his jobs ; He was a professor Emeritus for science , At the University of Arizona he was co – director of space engineering research, and visiting professor at Tsinghua University in Beijing. While the hybrid rocket motors were being made john Lewis was board director of American Rocket Company as an acronym (AmRoc). He has given over 90 lectures, 100 authored scientific publications, and over 10 books were written by him.
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