Columbia subject headings:
Harvard subject headings:
Calles, Plutarco Elías, 1877-1945.
Mexico--History--1867-1910.
Mexico--History--1910-1946.
Mexico--History--Revolution, 1910-1920.
Presidents--Mexico--Biography
Princeton subject headings:
Calles, Plutarco Elías, 1877-1945.
Mexico--History--1867-1910.
Mexico--History--Revolution, 1910-1920.
Presidents--Mexico--Biography.