Coal mine health and safety : hearings before the General Subcommittee on Labor of the Committee on Education and Labor, House of Representatives, Ninety-first Congress, first session, on H.R. 4047, H.R. 4295, and H.R. 7976, bills to improve the health and safety conditions of persons working in the coal mine industry of the United States.
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Format: | Government Document Book |
Language: | English |
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Washington :
U.S. Govt. Print. Off.,
1969.
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Y 4.ED 8/1:C 63/4
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Y 4.ED 8/1:C 63/4 | Available Place a Hold |