Silicosis prevention; dust control in foundries.
Silicosis prevention; dust control in foundries.
United States Department of labor. Frances Perkins, secretary. Division of labor standards. Verne A. Zimmer, director.
- Washington, U.S. Govt. print. off., 1939.
- iii, 25 p. illus., diagrs. 23 cm.
"Selected references": p. 25.
l 39000104
Lungs--Dust diseases.
Foundries.
HD7264 / .U6 1939a
"Selected references": p. 25.
l 39000104
Lungs--Dust diseases.
Foundries.
HD7264 / .U6 1939a