Columbia subject headings:
Harvard subject headings:
City and town life--Developing countries--Congresses.
City planning--Developing countries--Congresses.
Developing countries--Social conditions--Congresses.
Housing--Developing countries
Housing--Latin America
Self-help housing--Latin America.
Princeton subject headings:
Housing--Developing countries--Congresses.
Self-help housing--Developing countries--Congresses.
Working class--Dwellings--Developing countries--Congresses.