Columbia subject headings:
Federal-state controversies--Mexico.
Mexico--Politics and government--1910-1946.
Sonora (Mexico : State)--Politics and government.
Yocupicio Valenzuela, Román, 1890-1950.
Harvard subject headings:
Federal-state controversies--Mexico.
Mexico--Politics and government--1910-1946.
Sonora (Mexico : State)--Politics and government.
Yocupicio Valenzuela, Román, 1890-1950.
Princeton subject headings:
Federal-state controversies--Mexico.
Mexico--Politics and government--1910-1946.
Sonora (Mexico : State)--Politics and government.
Yocupicio Valenzuela, Román, 1890-1950.