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Test card
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1921
Showing papers on "Test card published in 1921"
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Journal Article
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DOI
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An Illuminated Test-Card Holder for Near
[...]
Alfred Cowan
01 Aug
1921
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American Journal of Ophthalmology
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Journal Article
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DOI
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A new test card
[...]
J. Monroe Thorington
01 Oct
1921
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American Journal of Ophthalmology
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