Columbia subject headings:
Harvard subject headings:
Economic development--European Union countries--Congresses.
Economic development--Southern States--Congresses.
Regional economics--European Union countries--Congresses.
Regional economics--Southern States--Congresses.
Princeton subject headings:
Economic development--European Union countries--Congresses.
Economic development--Southern States--Congresses.
Regional economics--European Union countries--Congresses.
Regional economics--Southern States--Congresses.