01026cam a22002531a 4500 l 59000003 DLC 20260227111545.0 840222s1959 dcua f001 0 eng l 59000003 (OCoLC)10444253 DLC NSchGEM OCoLC DLC premarc TJ1177 .G78 Griffin, William Gatewood. The principles and techniques of mechanical guarding / [by William G. Griffin and Sheldon W. Homan. Washington] : U.S. Dept. of Labor, Bureau of Labor Standards, 1959. v, 58 p. : ill. ; 26 cm. Bulletin (United States. Bureau of Labor Standards) ; no. 197 "Replaces Special bulletin no. 7, Suggested standards for industrial safeguards," issued in 1942 by the Bureau under its earleir name, Division of Labor Standards. Machinery Safety appliances. Homan, Sheldon William. United States. Bureau of Labor Standards. 36980 36980