Federal mine safety and health amendments act of 1977 :
hearings before the Subcommittee on Labor of the Committee on Human Resources, United States Senate, Ninety-fifth Congress, first session, on S. 717 ... March 30, 31, and April 1, 1977.
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Item Link | Original Source |
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Full view | University of Illinois at Urbana-Champaign |
Full view | University of Michigan |