T. Day, D. Mineral resources of the United States. Calendar year 1903 / David T. Day.
Cita Chicago Style (17a ed.)T. Day, David. Mineral Resources of the United States. Calendar Year 1903 / David T. Day. Washington : government printing office, 1904.
Cita MLA (8a ed.)T. Day, David. Mineral Resources of the United States. Calendar Year 1903 / David T. Day.
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