Technology and labor in copper ore mining, household appliances, and water transportation industries.
Washington, DC : U.S. Dept. of Labor, Bureau of Labor Statistics : 
> United States
> Technological innovations.
Shipping > United States > Technological innovations.
Labor supply > Effect of technological innovations on > United States.
Copper ores > United States > Technological innovations.
Shipping list no.: 93-387-P.
v, 41 p. :
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