Columbia subject headings:
Competition--Congresses.
Division of labor--Congresses.
Regional economics--Congresses.
Technological innovations--Congresses.
Harvard subject headings:
Competition--Congresses
Division of labor--Congresses.
Regional economics--Congresses.
Technological innovations--Congresses
Princeton subject headings:
Competition--Congresses.
Division of labor--Congresses.
Regional economics--Congresses.
Technological innovations--Congresses.