Columbia subject headings:
Harvard subject headings:
Cost and standard of living--Mexico--Tijuana (Baja California)
Tijuana (Baja California, Mexico)--Economic conditions.
Tijuana (Baja California, Mexico)--Social conditions.
Working class--Mexico--Tijuana (Baja California)
Working class--Mexico--Tijuana (Baja California)--Social conditions.
Princeton subject headings:
Tijuana (Baja California, Mexico)--Econonic conditions.
Tijuana (Baja California, Mexico)--Social conditions.
Working class--Mexico--Tijuana (Baja California)--Social conditions.