Columbia subject headings:
Harvard subject headings:
Agriculture and state--Mexico--History.
Ejido de Emiliano Zapata--History.
Hacienda de Guaracha--History.
Land reform--Mexico--History.
Princeton subject headings:
Agriculture and state--Mexico--History.
Ejido de Emiliano Zapata--History.
Hacienda de Guaracha--History.
Land reform--Mexico--History.