Columbia subject headings:
Harvard subject headings:
Journalism--Mexico--Yucatán (State)--History--19th century.
Press--Mexico--Yucatán (State)--History--19th century.
Printing--Mexico--Yucatán (State)--History--19th century.
Princeton subject headings:
Journalism--Mexico--Yucatán (State)--History--19th century.
Press--Mexico--Yucatán (State)--History--19th century.
Printing--Mexico--Yucatán (State)--History--19th century.