Metal and Nonmetallic Mine Safety: Hearings before the Subcommittee on Labor of the Senate Committee on Labor and Public Welfare on H.R. 8989, S. 2972, S. 996, S. 3094, March 21 and 22, 1966

Coverage: Washington : U.S. Govt. Print. Off., 1966

Volumes:

Metal and Nonmetallic Mine Safety: Hearings before the Subcommittee on Labor of the Senate Committee on Labor and Public Welfare on H.R. 8989, S. 2972, S. 996, S. 3094, March 21 and 22, 1966