Columbia subject headings:
Harvard subject headings:
Agricultural wages--Mexico--Baja California (Peninsula)--History--19th century--Statistics.
Agricultural wages--Mexico--History--19th century--Statistics.
Haciendas--Mexico--Accounting--History--19th century--Statistics.
Haciendas--Mexico--Baja California (Peninsula)--Accounting--History--19th century--Statistics.
Princeton subject headings:
Agricultural wages--Mexico--Baja California (Territory)--History--19th century--Statistics.
Agricultural wages--Mexico--History--19th century--Statistics.
Haciendas--Mexico--Accounting--History--19th century--Statistics.
Haciendas--Mexico--Baja California (Territory)--Accounting--History--19th century--Statistics.