U.S. Dept. of Labor, Bureau of Labor Statistics : For sale by the Supt. of Docs., U.S. G.P.O.,
Trends in multifactor productivity, 1948-81.
Bulletin / U.S. Department of Labor, Bureau of Labor Statistics ;
Bulletin of the United States Bureau of Labor Statistics ;
United States. Bureau of Labor Statistics. Office of Productivity and Technology.
Trends in multifactor productivity, 1948-81.