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Mitchel, John,

Manual of practical assaying : intended for the use of metallurgists, captains of mines, and assayers in general, with copions tables for the purpose of ascertaining in assays of gold and silver, the precise amount, in counces, panny weights, and grains, of noble metal, contained in one tan of one fr - 2 # ed., entirely rev. and greatly enl. - xi, 568 páginas

Subjects--Topical Terms:
Ensayos

LC Class. No.: TN550 / M57 1854