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| View Original: | Curta calculators - Ridai Museum of Modern Science, Tokyo - DSC07524.JPG (5468x3044) | |||
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| Keywords: Curta calculators - Ridai Museum of Modern Science, Tokyo - DSC07524.JPG en Exhibit in the Ridai Museum of Modern Science Tokyo University of Science Kagurazaka campus - 1-3 Kagurazaka Shinjuku-ku Tokyo 2015-02-20 02 02 00 own Daderot other versions cc-zero Portable mechanical calculators in the Ridai Museum of Modern Science Curta calculator | ||||
