The assayer's guide, or, Practical directions to assayers, miners, and smelters, for the test and assays, by heat and by wet processes, of the ores of all the principal metals, and of gold and silver coins and alloys [microform] /
Lieber, Oscar M.(Oscar Montgomery),1830-1862.
Philadelphia : H.C. Baird,
1852.
Sabin 40986.
Sabin Group 93.
Microfiche.
Assaying.