01138cam a22002651 4500 l 37000087 DLC 20260227111536.0 801030s1937 dcu b f100 0 eng l 37000087 (OCoLC)6882440 DLC WMUW DLC premarc HD7264 .N3 1937d 613.63 National Silicosis Conference (2nd : 1937 : Washington, D.C.) National Silicosis Conference; summary reports submitted to the Secretary of Labor by conference committees, February 3, 1937. Washington, U.S. Govt. Print. Off., 1937. viii, 56 p. incl. tables. 23 cm. U.S. Dept. of Labor. Division of Labor Standards. Bulletin no. 13 At head of title: United States Department of Labor. Frances Perkins, secretary. Division of Labor Standards. Verne A. Zimmer, director. "Committee on the Prevention of Silicosis through Engineering Control. List of selected references": p. 52-56. Lungs Dust diseases Congresses. Silicosis Congresses. 36228 36228