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Title: Model (scale 1:4) of Edwards air pump in section, worked by [Go to resource]
Description: Model (scale 1:4) of Edwards air pump in section, worked by hand. One wood cut of three throw do., framed 7" x 5 3/4" License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1904-13 Go to resource More Like this...
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