National silicosis conference...
Subtitle: Final report[s] of the committee[s]...
Contributors: United States. Division of Labor Standards.
Series: Bulletin / United States  Dept. of Labor.  Division of Labor Standards -- no. 21, part 1-4; Bulletin (United States. Division of Labor Standards) -- no. 21, pt. 1-4.
Publisher: U.S.Govt.Print.Off.
Published: 1938
Place of publication: Washington
Language: eng
Number of pages: 118
Subjects: Lungs -- Dust diseases -- Congresses.; Dust control.
Genres: Congresses.
Notes: At head of title: United States Department of Labor.  Frances Perkins, secretary.  Division of Labor Standards.  Verne A. Zimmer, director.

List of references in parts 1 and 2.
Table of contents: title: part 1. Report on medical control.- part 2. Report on engineering control.- part 3. Report on economic, legal and insurance phases.- part 4. Report on regulatory and administrative phases.