Columbia subject headings:
Balance of trade--United States.
Competition, International.
Exports--United States.
Industrial productivity--United States.
Manufactures--United States.
Manufacturing industries--United States.
Technological innovations--United States.
Harvard subject headings:
Balance of trade--United States
Competition, International.
Exports--United States
Industrial productivity--United States--Statistics.
Industrial productivity--United States.
Manufactures--United States--Statistics
Manufacturing industries--United States
Manufacturing industries--United States--Statistics.
Technological innovations--United States
United States--Commerce.
Princeton subject headings:
Balance of trade--United States.
Competition, International.
Exports--United States.
Industrial productivity--United States.
Manufacturing industries--United States.
Technological innovations--United States.