Electrothermic Smelting of Iron Ores in Sweden [microform]Alfred 1871-1944 Stansfield, Canada Dept of MinesHäftad239 kr
Commercial Feasibility of the Electric Smelting of Iron Ores in B. C. [microform]Alfred 1871-1944 Stansfield, British Columbia Bureau of MinesHäftad239 kr
Commercial Feasibility of the Electric Smelting of Iron Ores in B. C. [microform]Alfred 1871-1944 Stansfield, British Columbia Bureau of MinesHäftad239 kr
Electrothermic Smelting of Iron Ores in Sweden [microform]Alfred 1871-1944 Stansfield, Canada Dept of MinesHäftad239 kr