Columbia subject headings:
Harvard subject headings:
City planning--Canada--Data processing--Congresses.
City planning--United States--Data processing--Congresses.
Regional planning--Canada--Data processing--Congresses.
Regional planning--United States--Data processing--Congresses.
Princeton subject headings:
Administrative agencies--Data processing--Congresses.
Municipal government--Data processing--Congresses.
Public administration--Data processing--Congresses.