TY  - BOOK
AU  - Kossoris,Max Davis
AU  - Kohler,Reinfreid Fred
TI  - Hours of work and output
AV  - HD8051 .A62 no. 917
U1  - 331.06173 s 
PY  - 1948///]
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Hours of labor
KW  - United States
KW  - Labor productivity
ER  -