Just technology, 2018, via WWW, July 12, 2018: PDF title page (Gearold Johnson; Colorado State University) p. 81 (Professor Emeritus in the Department of Mechanical Engineering at Colorado State University in Fort Collins, CO; he earned degrees from Purdue University, a B.S. in Aeronautical Engineering, a M.S. in Engineering, and a Ph.D. in Mechanical Engineering)

OCLC, July 12, 2018 (access points: Johnson, Gearold R.; Johnson, Gearold; usage: Gearold R. Johnson; Gearold Johnson)