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Volume 131 >> Issue 62 : Wednesday, January 25, 2012
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Fredric F. Ehrich ’47, an MIT senior lecturer, instructs students during the IAP subject “Introduction to Jet Propulsion.” The class began hands-on testing of a jet engine.
Christopher A. Maynor—The Tech
Fredric F. Ehrich ’47, an MIT senior lecturer, instructs students during the IAP subject “Introduction to Jet Propulsion.” The class began hands-on testing of a jet engine.