Safety code for paper and pulp mills, National safety council, sponsor : tentative American standard approved December 8, 1925, American Engineering Standards Committee
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Safety code for paper and pulp mills, National safety council, sponsor : tentative American standard approved December 8, 1925, American Engineering Standards Committee
（Bulletin / Bureau of Labor Statistics, no. 410）（Safety code series）
U.S. G.P.O., 1926
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At head of title: United States Department of Labor... Bureau of Labor Statistics...