Lieber, Oscar Montgomery  1830-1862, <br/><br/>
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. / 
by Oscar M. Lieber 
 - # A new, rev. and enl. ed. 
 - xvi, 283 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ensayos
<br/><br/><label>LC Class. No.: </label>TJ543  / L54 1893