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Title: Ronalds' photographic thermograph, 1867. [Go to resource]
Description: Ronalds' photographic thermograph, 1867. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: thermograph Temporal: 1867 Source: Science Museum Creator: Ronald (designer) Identifier: 1926-938 Go to resource More Like this...
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