Columbia subject headings:
City planning--Congresses.
City planning--Great Britain--Congresses.
Regional planning--Congresses.
Regional planning--Great Britain--Congresses.
Harvard subject headings:
City planning--Congresses
City planning--Great Britain--Congresses.
Regional planning--Congresses.
Regional planning--Great Britain--Congresses.
Princeton subject headings:
City planning--Congresses.
City planning--Great Britain--Congresses.
Regional planning--Congresses.
Regional planning--Great Britain--Congresses.