Category:Ray Johnson (engineer)
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English: Ray Johnson is a mechanical engineering professor who was at the Rochester Institute of Technology as of the early 1980s.
Media in category "Ray Johnson (engineer)"
The following 2 files are in this category, out of 2 total.
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RIT NandE Vol15 Num16 1983 Dec15 Complete.pdf 1,689 × 2,570, 4 pages; 5.28 MB
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RIT NandE Vol16Num11 1984 Nov29 Complete.pdf 1,650 × 2,550, 4 pages; 20.17 MB