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Household physics (1919)
Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 254
Figure 270. — A Set of Pul-leys Used to Lift HeavyObjects to the UpperStories of High Buildings. … Figure 271. —A Jack Screw. 244 MACHINESPhysics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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