Hours and earnings in anthracite and bituminous coal mining
Subtitle: Anthracite--1919 and 1920, bituminous--1919.
Series: Bulletin of the United States Bureau of Labor Statistics,; no. 279; Wages and hours of labor series
Publisher: Govt. Print. Off.
Published: 1921
Place of publication: Washington
Language: eng
Number of pages: 114
Subjects: Hours of labor.; Wages -- United States.; Coal miners -- United States.; Coal mines and mining -- United States.
Notes: At head of title:  U.S. Department of Labor.  James J. Davis, secretary.  Bureau of Labor Statistics.  Ethelbert Stewart, commissioner.
Issued also as House doc. 1030, U.S., 66th Cong., 3d sess.
"Appendix.--Definitions of occupations": p. 111-114.