"Etats-Unis. Bureau of labor statistics." . . . . "Safety appliances Standards United States." . . "American Engineering Standards Committee." . . . . . . . . . "Safety code for the protection of industrial workers in foundries" . "Safety code for the protection of industrial workers in foundries"@en . . . . . . . . . "Safety code for the protection of industrial workers in foundries : Tentative American Standard, approved June, 1922, by American Engineering Standards Committee" . . . "--safety code for the protection of industrial workers in foundries"@en . . . . . . . "U.S. Department of Labor. Bureau of Labor Statistics" . . "Foundries Safety measures Standards United States." . .