Columbia subject headings:
Architecture--Environmental aspects--South America--Congresses.
City planning--South America--Congresses.
Harvard subject headings:
Architecture--Environmental aspects--South America--Congresses.
City planning--South America--Congresses.
Princeton subject headings:
Architecture--Environmental aspects--South America--Congresses.
Cities and towns--Buildings, structures, etc.--Congresses.
City planning--South America--Congresses.