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| View Original: | Hand-held calculators, including Castecc Addiator and MBC Pocket Calculators - Ridai Museum of Modern Science, Tokyo - DSC07521.JPG (5192x2919) | |||
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| Keywords: Hand-held calculators, including Castecc Addiator and MBC Pocket Calculators - Ridai Museum of Modern Science, Tokyo - DSC07521.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 01 32 own Daderot other versions cc-zero Portable mechanical calculators in the Ridai Museum of Modern Science Faber-Castell slide rule | ||||
