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Issue No.03 - July-September (1998 vol.20)
pp: 72-73
Earl Swartzlander, "Calculators", IEEE Annals of the History of Computing, vol.20, no. 3, pp. 72-73, July-September 1998, doi:10.1109/85.707577
1. B. Flamm, "The World's First Electronic Calculator—Who Made It?" Int'l Calculator Collector, no. 14, Fall 1996.
2. B. Flamm, "Friden EC-130: The World's Second Electronic Calculator?" Int'l Calculator Collector, no. 19, Winter 1997.
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