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” —Donna Seaman
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this new edition of the bestselling hardback will prove irresistible to collectors and new fans of high fantasy alike
Empire of the Sum: The Rise and Reign of the Pocket Calculator Nature_Gift_Guide ” —Donna SeamanA New York Times Book Review Editors' Choice "[A] lively, entertaining history." New York Times Book Review, Editors' Choice The hidden history of the pocket calculator a device that ushered in modern mathematics, helped build the atomic bomb, and went with us to the moon and the mathematicians, designers, and inventors who brought it to life. Starting with hands, abacus, and slide rule, humans have always reached for tools to simplify math. Pocket
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