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Title: Metal test type for distance and astigmatism, plastic cover, [Go to resource]
Description: Metal test type for distance and astigmatism, plastic cover, probably British, early 20th century License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: test types Temporal: 1901-1930 Source: Science Museum Identifier: 1977-627/27 Go to resource More Like this...
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