An essay on the mystery of tempering steel : wherein the effects of that operation are fully considered / Extracted from the works of the celebrated Mons. Reaumur ; By J. Savigny.
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An essay on the mystery of tempering steel : wherein the effects of that operation are fully considered / Extracted from the works of the celebrated Mons. Reaumur ; By J. Savigny. Credit: Wellcome Collection. Public Domain Mark