Columbia subject headings:
Cities and towns--Mexico--Social conditions.
Cities and towns--Spain--Madrid--Social conditions.
City planning--Mexico--History.
City planning--Spain--Madrid--Social conditions.
Madrid (Spain)--Social conditions.
Mexico--Social conditions.
Urbanization--Sociological aspects.
Harvard subject headings:
Princeton subject headings:
Cities and towns--Mexico--Social conditions.
Cities and towns--Spain--Madrid--Social conditions.
City planning--Mexico--History.
City planning--Spain--Madrid--Social conditions.
Madrid (Spain)--Social conditions.
Mexico--Social conditions.
Urbanization--Sociological aspects.