Fell, J. E. (2009). Ores to metals: The Rocky Mountain smelting industry. University Press of Colorado.
Chicago-čujuhus (17. p.)Fell, James E. Ores to Metals: The Rocky Mountain Smelting Industry. Boulder: University Press of Colorado, 2009.
MLA-čujuhus (9. p.)Fell, James E. Ores to Metals: The Rocky Mountain Smelting Industry. University Press of Colorado, 2009.
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