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Title: Two examples of two-motion selectors, 1924, in service Holb [Go to resource]
Description: Two examples of two-motion selectors, 1924, in service Holborn Tandem Exchange 1927-1977 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1977-483 Go to resource More Like this...
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