Columbia subject headings:
Agriculture and state--Mexico--Yucatán (State)--Congresses.
Yucatán (Mexico : State)--History--Congresses.
Yucatán (Mexico : State)--Social conditions--Congresses.
Harvard subject headings:
Agriculture and state--Mexico--Yucatán (State)--History.
Yucatán (Mexico : State)--Economic conditions.
Yucatán (Mexico : State)--Social conditions.
Yucatán (Mexico : State)--History.
Princeton subject headings:
Agriculture and state--Mexico--Yucatán (State)--Congresses.
Yucatán (Mexico : State)--Economic conditions--Congresses.
Yucatán (Mexico : State)--History--Congresses.
Yucatán (Mexico : State)--Rural conditions--Congresses.
Yucatán (Mexico : State)--Social conditions--Congresses.