Columbia subject headings:
Educational mobility--Mexico--Monterrey.
Monterrey (Mexico)--Social conditions.
Puebla (Mexico : State)--Social conditions.
Social mobility--Mexico--Monterrey.
Social mobility--Mexico--Puebla (State)
Harvard subject headings:
Educational mobility--Mexico--Monterrey.
Monterrey (Mexico)--Social conditions.
Puebla (Mexico : State)--Social conditions.
Social mobility--Mexico--Monterrey.
Social mobility--Mexico--Puebla (State)
Princeton subject headings:
Educational mobility--Mexico--Monterrey.
Monterrey (Mexico)--Social conditions.
Puebla (Mexico : State)--Social conditions.
Social mobility--Mexico--Monterrey.
Social mobility--Mexico--Puebla (State).