Rollins, William Herbert, 1852-1929 · Boston : The University Press · leaf 580
NOTE 137 —FIGURE 7 —TYING THE IRON COREWIRES OF THE PRIMARY OF AN INDUC-TION COIL Plate 65 … NOTE 137 —FIGURE 9 —A MACHINE FOR WIND-ING THE SECONDARY COILS OF AN INTER-CHANGEABLE SECONDARY INDUCTION COIL Plate 66
X-rays · Phototherapy
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