Columbia subject headings:
Mexico (Mexico : State)--History--1821-1861.
Mexico (Mexico : State)--History--1867-1910.
Mines and mineral resources--Mexico--Mexico (State)
Harvard subject headings:
Mineral industries--Mexico--Mexico (State)--History--19th century.
Mines and mineral resources--Mexico--Mexico (State)--History--19th century.
Princeton subject headings:
Mineral industries--Mexico--Mexico (State)--History--19th century.
Mines and mineral resources--Mexico--Mexico (State)--History--19th century.