Columbia subject headings:
Harvard subject headings:
Guayaquil (Ecuador)--Population--Statistics.
Quito (Ecuador)--Population--Statistics.
Social surveys--Ecuador--Guayaquil.
Social surveys--Ecuador--Quito.
Princeton subject headings:
Guayaquil (Ecuador)--Population--Statistics.
Housing--Ecuador--Guayaquil--Statistics.
Housing--Ecuador--Quito--Statistics.
Quito (Ecuador)--Population--Statistics.