The practice of ore dressing in europe :
Kunhardt, Wheaton Bradish,
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
Reimpresiones: (2a, 1889)
Preparación mecánica de minerales
Ingeniería de minas--Europa
TN500 / K84
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
Reimpresiones: (2a, 1889)
Preparación mecánica de minerales
Ingeniería de minas--Europa
TN500 / K84