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Title: Toothed gear wheel of black Parkesine, made by Alexander Par [Go to resource]
Description: Toothed gear wheel of black Parkesine, made by Alexander Parkes, c. 1860, England License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1937-30/9 Go to resource More Like this...
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