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Title: [Go to resource]
Description: Rubber diaphragm, size 82 1/2, "Durex" or "Elarco" brand, English, 1950 to 1955 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: diaphragms Temporal: 1950-1955 Source: Science Museum Creator: Durex (maker) Identifier: A626846 Go to resource More Like this...
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