Columbia subject headings:
Mayas--Mexico--Yucatán (State)--Economic conditions--20th century.
Mayas--Mexico--Yucatán (State)--Land tenure--History--20th century.
Mayas--Mexico--Yucatán (State)--Social conditions--20th century.
Yucatán (Mexico : State)--History--20th century.
Harvard subject headings:
Princeton subject headings:
Mayas--Mexico--Yucatán (State)--Economic conditions--20th century.
Mayas--Mexico--Yucatán (State)--History--20th century.
Mayas--Mexico--Yucatán (State)--Land tenure--20th century.
Mayas--Mexico--Yucatán (State)--Social conditions--20th century.
Yucatán (Mexico : State)--History--20th century.