Columbia subject headings:
Harvard subject headings:
Cities and towns--Effect of technological innovations on--Congresses.
Cities and towns--Growth--Congresses
City planning--Congresses
Urban beautification--Congresses.
Urban ecology (Sociology)--Congresses
Princeton subject headings:
Cities and towns--Effect of technological innovations on--Congresses.
Cities and towns--Growth--Congresses.
City planning--Congresses.
Urban beautification--Congresses.
Urban ecology (Sociology)--Congresses.