Columbia subject headings:
Housing--Argentina.
Housing--Chile.
Housing--Uruguay.
Poor--Argentina.
Poor--Chile.
Poor--Uruguay.
Slums--Argentina.
Slums--Chile.
Slums--Uruguay.
Harvard subject headings:
Housing--Argentina
Housing--Chile
Housing--Uruguay.
Poor--Argentina
Poor--Chile
Poor--Uruguay.
Slums--Argentina.
Slums--Chile.
Slums--Uruguay.
Princeton subject headings:
Cities and towns--South America.
Labor--South America.