TY  - BOOK
AU  - Kossoris,Max Davis
TI  - Studies of the effects of long working hours
T2  - U.S. Bureau of Labor Statistics. Bulletin no. 791, 791-A
AV  - HD8051 .A62 no. 791,
U1  - 331.81 
PY  - 1944///-
CY  - [Washington
PB  - U.S. Govt. Print. Off.
KW  - Hours of labor
KW  - Industrial efficiency
N1  - At head of title: United States Dept. of Labor, Frances Perkins, Secretary. Bureau of Labor Statistics, Isador Lubin, Commissioner (on leave) A.F. Hinrichs, Acting Commmissioner; Appears also in part in the Monthly labor review
ER  -