Purdy, C. P. (1951). Antimony occurrences of Washington. State Printing Plant.
Cita Chicago Style (17a ed.)Purdy, C. Phillips. Antimony Occurrences of Washington. Olympia: State Printing Plant, 1951.
Cita MLA (8a ed.)Purdy, C. Phillips. Antimony Occurrences of Washington. State Printing Plant, 1951.
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