Columbia subject headings:
Henequen industry--Mexico--Yucatán (State)
Migration, Internal--Mexico--Yucatán (State)
Peasants--Mexico--Yucatán (State)
Harvard subject headings:
Henequen industry--Mexico--Yucatán (State)
Migration, Internal--Mexico--Yucatán (State)
Peasants--Mexico--Yucatán (State)
Princeton subject headings:
Henequen industry--Mexico--Yucatan.
Migration, Internal--Mexico--Yucatan.
Peasants--Mexico--Yucatan.