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Title: Test type to test eyesight, England, 1920-1960 [Go to resource]
Description: Test-types with rear illumination, for testing visual acuity, English, probably c.1950 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: Snellen test types Temporal: 1920-1960 Source: Science Museum Creator: Unknown maker Identifier: A627002 Go to resource More Like this...
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