00761cam a22002411 4500 l 53000126 DLC 20260227111543.0 921102s1953 dcua f000 0 eng c l 53000126 (OCoLC)26898806 U.S. Dept. of Labor. Library CLU DLC premarc HD7273 .U53 1953 331.823 United States. Bureau of Labor Standards. Mr. Manager, guard your investment in manpower. [Washington, U.S. Govt. Print. Off., 1953] [16] p. illus. 21 cm. Its Bulletin, no. 164 Machinery Safety appliances. Bulletin (United States. Bureau of Labor Standards) ; 164. 36807 36807