Columbia subject headings:
Architecture--Environmental aspects--Europe--Exhibitions.
Architecture--Europe--Forecasting--Exhibitions.
Architecture--Human factors--Europe--Exhibitions.
City planning--Europe--Forecasting--Exhibitions.
Harvard subject headings:
Princeton subject headings:
City planning--Europe--History--20th century--Exhibitions.
City planning--United States--History--20th century--Exhibitions.
Urban beautification--Europe--History--20th century--Exhibitions.
Urban beautification--United States--History--20th century--Exhibitions.
Urban renewal--Europe--History--20th century--Exhibitions.
Urban renewal--United States--History--20th century--Exhibitions.