Scientific Papers of the Bureau of Standards, No. 396; Thermal and Physical Changes Accompanying the Heating of Hardened Carbon Steels.
Washington, D.C.: Government Printing Office, 1920. 8vo. 19 pgs. Some wear and fading to wraps, back cover creased. The thermal change observed in hardened steels on heating below Ac 1. Near Fine Wraps (Item ID: 10882)