Columbia subject headings:
Agriculture--Economic aspects--Mexico--Hidalgo (State)--History--19th century.
Haciendas--Mexico--Hidalgo (State)--History--19th century.
Hidalgo (Mexico : State)--Description and travel.
Pulque.
Harvard subject headings:
Agriculture--Economic aspects--Mexico--Hidalgo (State)--History--19th century.
Haciendas--Mexico--Hidalgo (State)--History--19th century.
Hidalgo (Mexico : State)--Description and travel.
Pulque.
Princeton subject headings:
Agriculture--Economic aspects--Mexico--Hidalgo (State)--History--19th century.
Haciendas--Mexico--Hidalgo (State)--History--19th century.
Hidalgo (Mexico : State)--Description and travel.
Pulque.