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Title: Apertometer, glass, made by R. & J. Beck Ltd., London, 1948- [Go to resource]
Description: Apertometer, glass, made by R. & J. Beck Ltd., London, 1948-1952 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: apertometer Temporal: 1948-1952 Source: Science Museum Creator: R. & J. Beck Ltd Identifier: 1982-1526 Go to resource More Like this...
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