Kunhardt, Wheaton Bradish, <br/><br/>
The practice of ore dressing in europe :  a description of foreign methods for the mechanical concentration of ores, revised and corrected from a series of articles in the school of mines quarterly of Columbia College / 
Wheaton B. Kunhardt 
 - viii, 110 páginas 
<br/><br/> Reimpresiones: (2a, 1889) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Preparación mecánica de minerales<br/>Ingeniería de minas--Europa
<br/><br/><label>LC Class. No.: </label>TN500  / K84