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