TY  - BOOK
AU  - Lieber, Oscar Montgomery
TI  - The assayer's guide, or, practical directions to assayers, miners and smelters, for the tests and assays, by heat and by wet processes of the ores of all the principal metals, of gold and silver coins and alloys and of coal, & c.
AV  - TJ543 L54 1893
PY  - 1893///
CY  - Philadelphia
PB  - H. C. Baird
KW  - Ensayos
ER  -