Columbia subject headings:
Harvard subject headings:
Álvaro Obregón (Mexico City, Mexico)
Mexico City (Mexico)--Economic conditions.
Obregón, Álvaro, 1880-1928
Poor--Mexico--Mexico City.
Princeton subject headings:
Álvaro Obregón (Mexico City, Mexico)--Economic conditions.
Álvaro Obregón (Mexico City, Mexico)--Economic policy.
Urban poor--Mexico--Villa Obregón (Distrito Federal).