United States. Congress. House. Committee on Education and Labor. Subcommittee on Mine Safety and Health Inspections and Investigations & ProQuest (Firm). (1956). Mine Safety (Metallic and Nonmetallic Mines): Hearings before the United States House Committee on Education and Labor, Subcommittee on Mine Safety and Health Inspections and Investigations, Eighty-Fourth Congress, second session, on Aug. 22, 24, Sept. 18, 19, 21, Dec. 3-5, 1956. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Education and Labor. Subcommittee on Mine Safety and Health Inspections and Investigations and ProQuest (Firm). Mine Safety (Metallic and Nonmetallic Mines): Hearings Before the United States House Committee on Education and Labor, Subcommittee on Mine Safety and Health Inspections and Investigations, Eighty-Fourth Congress, Second Session, on Aug. 22, 24, Sept. 18, 19, 21, Dec. 3-5, 1956. Washington: U.S. G.P.O., 1956.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Education and Labor. Subcommittee on Mine Safety and Health Inspections and Investigations and ProQuest (Firm). Mine Safety (Metallic and Nonmetallic Mines): Hearings Before the United States House Committee on Education and Labor, Subcommittee on Mine Safety and Health Inspections and Investigations, Eighty-Fourth Congress, Second Session, on Aug. 22, 24, Sept. 18, 19, 21, Dec. 3-5, 1956. U.S. G.P.O., 1956.