| Marg, Elwin | <person> U.S. Physicist, *1918. See: Mackay-Marg tonometer. (05 Mar 2000) |
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| Mackay-Marg tonometer | A recording electronic applanation tonometer. (05 Mar 2000) |
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| Fraley, Elwin | <person> U.S. Urologist, *1934. See: Fraley syndrome. (05 Mar 2000) |