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- Mark Littmann Bücher
Bücher von Mark Littmann
Mark Littmann is a Professor of Science Writing and Astronomy at the University of Tennessee. Ken Wilcox is a Research Chemist at Phillips Petroleum Co., and an Adjunct Professor of Physics and Astronomy at Bartlesville Wesleyan College. Fred Espenak is an Astrophysicist at the NASA/Goddard Space Flight Center.