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1 Jan 1893 Jahr - US ophthalmologist Edward Jackson further develops and popularises the cross cylinder test for astigmatism 1893
Zugefügt zum Band der Zeit:
The development of optometry through the ages
By
Christian Pot
10 Apr 2021
0
0
764
Datum:
1 Jan 1893 Jahr
Jetzt
~ 132 years ago
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