Columbia subject headings:
Harvard subject headings:
Chihuahua (Mexico : State)--Economic conditions.
Industries--Mexico--Chihuahua (State)--History.
Land tenure--Mexico--Chihuahua (State)--History.
Social classes--Mexico--Chihuahua (State)--History.
Princeton subject headings:
Chihuahua (Mexico : State)--Economic conditions.
Industries--Mexico--Chihuahua (State)--History.
Land tenure--Mexico--Chihuahua (State)--History.
Social classes--Mexico--Chihuahua (State)--History.