Columbia subject headings:
Harvard subject headings:
Economic development--Portugal--Porto--History--21st century.
European Union--Portugal.
Industrial policy--Portugal--Porto--History--21st century.
Technological innovations--Government policy--Portugal--Porto.
Princeton subject headings:
Economic development--Portugal--Porto--History--21st century.
European Union--Portugal.
Industrial policy--Portugal--Porto--History--21st century.
Technological innovations--Government policy--Portugal--Porto.