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