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Title: Mechanical pestle and mortar, patented by Henry Goodall in 1 [Go to resource]
Description: Mechanical pestle and mortar, patented by Henry Goodall in 1853 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: pestle
mortarSource: Science Museum Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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