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Eureka! An Encyclopedia … & Inventions [Macintosh]
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MacWin_Anglia_Eureka_AnEncyclopediaOfDiscoveriesAndInventions.iso
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1996-07-10
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247b
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2 lines
††The earliest power drill was probably Leyner's water-powered drill which was used in mines from 1907. Modern drills are powered by electricity and vary from large industrial versions to small hand-held models designed for tasks around the home.