TY  - BOOK
ED  - United States.
TI  - Hours and earnings in anthracite and bituminous coal mining: Anthracite--1919 and 1920, bituminous--1919
T2  - Bulletin of the United States Bureau of Labor Statistics,
AV  - HD8051 .A62 no. 279
PY  - 1921///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Hours of labor
KW  - Wages
KW  - United States
KW  - Coal miners
KW  - Coal mines and mining
N1  - 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
ER  -