An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 645
Fig. 430. — Radiograph of hand with gold ring on third finger. … Fig. 431. — Radiographic apparatus arranged for use in a dental hospital.(Photographic film inside patients mouth.) ROENTGEN RAYS AND OTHER RAYS 575
Electricity · Magnetism
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
