Columbia subject headings:
Harvard subject headings:
Calles, Plutarco Elías, 1877-1945.
Mexico--History--1910-1946.
Mexico--History--Revolution, 1910-1920.
Mexico--Politics and government--1910-1946.
Obregón, Álvaro, 1880-1928
Rodríguez, Abelardo L. (Abelardo Luján), 1889-1967.
Princeton subject headings:
Mexico--History--Revolution, 1910-1920.
Mexico--Politics and government--1910-1946.