Robert Hallowell Richards

• An Outline of the Metallurgy of Iron and Steel: Prepared for the Use of Students at the ...
• Ore Dressing
• Ore Dressing Volume 01
• Ore Dressing, Volume 1
• Ore Dressing, Volume 2
• Textbook of ore dressing
• Ore Dressing; Volume 04
• Outline of the Metallurgy of Iron and Steel