Columbia subject headings:
Zacatecas (Mexico : State)--Economic conditions.
Zacatecas (Mexico : State)--Politics and government.
Zacatecas (Mexico : State)--Social conditions.
Harvard subject headings:
Zacatecas (Mexico : State)--Economic conditions.
Zacatecas (Mexico : State)--Politics and government.
Zacatecas (Mexico : State)--Social conditions.
Princeton subject headings:
Zacatecas (Mexico : State)--Economic conditions.
Zacatecas (Mexico : State)--Politics and government.
Zacatecas (Mexico : State)--Social conditions.