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Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances (1918)
Keene, E. S. (Edward Spencer), b. 1864 · New York, McGraw-Hill book company, inc.; · leaf 390
ELECTRICITY 379 … Fig. 267.—Styles of plug receptacles.Heating · Lighting · Plumbing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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