Columbia subject headings:
Harvard subject headings:
Journalism--Mexico--History--19th century.
Journalism--Mexico--History--20th century.
Mexican periodicals--History--19th century.
Mexican periodicals--History--20th century.
Press--Mexico--History--19th century.
Press--Mexico--History--20th century.
Princeton subject headings:
Journalism--Mexico--History--19th century.
Journalism--Mexico--History--20th century.
Mexican periodicals--History--19th century.
Mexican periodicals--History--20th century.
Press--Mexico--History--19th century.
Press--Mexico--History--20th century.