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Title: Drawing (scale 1:4) of Onion's Double Beat Valves for Beam E [Go to resource]
Description: Drawing (scale 1:4) of Onion's Double Beat Valves for Beam Engine, 1798 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1883-480 Go to resource More Like this...
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