Columbia subject headings:
Mexico--History--Revolution, 1910-1920.
Zapata, Emiliano, 1879-1919.
Harvard subject headings:
Mexico--History--Revolution, 1910-1920.
Zapata, Emiliano, 1879-1919.
Princeton subject headings:
Mexico--History--Revolution, 1910-1920.
Zapata, Emiliano, 1879-1919.