A stamp printed in Germany shows Schickard's Calculating Machine, 350th anniv. of the calculator built by Prof. Wilhelm Shickard, University of Tubingen, circa 1973 Stock Image
by zatletic
Description
A stamp printed in Germany shows Schickard's Calculating Machine, 350th anniv. of the calculator built by Prof. Wilhelm Shickard, University of Tubingen, circa 1973
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Keywords
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