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Title: Coloured diagrams of two rotary drum pumps, 1790 and 1825 [Go to resource]
Description: Coloured diagrams of two rotary drum pumps, 1790 and 1825 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1929-15 Go to resource More Like this...
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