Glover, S. L. (1936). Nonmetallic mineral resources of Washington, with statistics for 1933. State Printing Plant.
Style de citation Chicago (17e éd.)Glover, Sheldon L. Nonmetallic Mineral Resources of Washington, with Statistics for 1933. Olympia: State Printing Plant, 1936.
Style de citation MLA (8e éd.)Glover, Sheldon L. Nonmetallic Mineral Resources of Washington, with Statistics for 1933. State Printing Plant, 1936.
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