Columbia subject headings:
Equality--Mexico--Mexico City.
Occupational mobility--Mexico--Mexico City.
Social mobility--Mexico--Mexico City.
Harvard subject headings:
Equality--Mexico--Mexico City.
Mexico City (Mexico)--Social conditions
Occupational mobility--Mexico--Mexico City.
Social mobility--Mexico--Mexico City.
Princeton subject headings:
Equality--Mexico--Mexico City.
Occupational mobility--Mexico--Mexico City.
Social mobility--Mexico--Mexico City.