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      The Sciences

      Our Heritage of the Mechanical Arts--II

      • By Alex. Del Mar on April 29, 1905
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      ABOUT THE AUTHOR(S)

        Recent Articles by Alex. Del Mar

        • Evolution of the Breech-Loader
        • Future Prices of Commodities and Materials, A Dished Disk Stabilizer and more
        • Inventions of Ancient Rome: Some Forerunners of Modern Ingenuity
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