Books by Glenn A. Fry:
Books in the extended shelves:
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Fry, Glenn A. (Glenn Ansel), 1908-: Effect of flashes of light on night visual acuity (Wright-Patterson Air Force Base, Ohio : Wright Air Development Center, Air Research and Development Command, United States Air Force, 1951., 1951), also by Mathew Alpern, United States. Air Force. Air Research and Development Command, Wright Air Development Center, Aerospace Medical Laboratory (U.S.), and Ohio State University. Research Foundation (page images at HathiTrust)
Find more by Glenn A. Fry at your library, or elsewhere.