FOOTNOTE:
[3] The Three Shift System in Steel—Horace B. Drury: an address to the Taylor Society and certain sections of the Am. Soc. Mech. Engineers and of the Am. Inst. Electr. Engineers, Dec. 3, 1920.
[3] The Three Shift System in Steel—Horace B. Drury: an address to the Taylor Society and certain sections of the Am. Soc. Mech. Engineers and of the Am. Inst. Electr. Engineers, Dec. 3, 1920.