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Hours of Labor for Workmen, Mechanics, Etc., Employed Upon Public Work of the United States -- Report of Hearing -- Relative to H.R. 7389, Limiting the Hours of Daily Services --

United States. Congress. Senate. Committee on Education and Labor

出版	U.S. Government Printing Office, 1898
URL	http://books.google.com.hk/books?id=arFMiw2hsM0C&hl=&source=gbs_api