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Coal-mine injuries and worktime.

APA Citation

United States. Bureau of Mines., United States. Mining Enforcement and Safety Administration. Coal-mine injuries and worktime. Washington: U.S. Dept. of the Interior, Mining Enforcement and Safety Administration.

MLA Citation

United States. Bureau of Mines, and United States. Mining Enforcement and Safety Administration. Coal-mine Injuries And Worktime. Washington: U.S. Dept. of the Interior, Mining Enforcement and Safety Administration,

Warning: These citations may not always be complete (especially for serials).