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Scientific American, Vol. 70, No. 7 (1894) (1894)
leaf 3
with the greatest ease of motion, the absence of tened to it, actuated by the field, which is shown in latter, the inventor mixes with it one-quarter per cent larly noticeable. this case placed within the circle of the Gramme ring. each of magnesium phosphate and sulphate.—W. On curves the guide… … © 1894 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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