Columbia subject headings:
Land reform--Mexico.
Mexico--Politics and government--1910-1946.
Mexico--Politics and government--1946-1970.
Mexico--Social conditions.
Harvard subject headings:
Land reform--Mexico.
Mexico--Politics and government--1910-1946.
Mexico--Politics and government--1946-1970
Mexico--Social conditions.
Princeton subject headings:
Land reform--Mexico.
Mexico--Politics and government--1910-1946.
Mexico--Politics and government--1946-1970.
Mexico--Social conditions.