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Household physics (1919)
Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 248
Figure 251.—The TackPuller Used as aFirst Class Lever. … Figure 253. — A CanOpener Used as aSecond Class Lever.Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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