File:17th-century-mechanical-calculators.jpg

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Summary

Description17th-century-mechanical-calculators.jpg	English: 17th century mechanical calculators by Blais Pascale in the french Musée des Arts et Métiers, Paris Български: Механичните калкулатори на Блез Паскал от 17в. в Музея на изкуствата и занаятите, Париж
Date	17 August 2010
Source	Own work
Author	Edal Anton Lefterov

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