Title | Setname | Type | ||
---|---|---|---|---|
1 | A process for the treatment of oxidized zinc ores | ir_etd | Text | |
2 | Igneous concentration of oxidized ores of zinc | ir_etd | Text | |
3 | The manufacture of zinc oxide directly from oxidized ores | ir_etd | Text | |
4 | Proposed innovations in the metallurgy of zinc | ir_etd | Text |