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Title: Thomas De Colmar's Arithmometer, 1867 [Go to resource]
Description: Thomas de Colmar arithmometer, no. 696, in box, 18" x 3 1/2" License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: calculating machines (stepped drum) Temporal: 1867 Source: Science Museum Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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