Não informado. (1871). Transactions of the American Institute of Mining Engineers. American Institute of Mining Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Transactions of the American Institute of Mining Engineers. New York: American Institute of Mining Engineers, 1871.
Lua MLA (8ú heag.)Não informado. Transactions of the American Institute of Mining Engineers. American Institute of Mining Engineers, 1871.
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