The Spectroscope and Gemmology
The Spectroscope and Gemmology
Mitchell, R. Keith: -
R. Keith Mitchell, FGA, Tully Medallist and a vice-president of the Gemmological Association, was instructor to the G.A. courses for more than twenty years, and the author of many papers on gemmology.
Descrierea produsului
Mitchell, R. Keith: -
R. Keith Mitchell, FGA, Tully Medallist and a vice-president of the Gemmological Association, was instructor to the G.A. courses for more than twenty years, and the author of many papers on gemmology.
Detaliile produsului
