Columbia subject headings:
Mexican newspapers--Mexico--Baja California (Peninsula)
Mexican periodicals.
Printing--Mexico--Baja California (Peninsula)--History.
Harvard subject headings:
Mexican newspapers--Mexico--Baja California (Peninsula)
Mexican periodicals.
Printing--Mexico--Baja California (Peninsula)--History.
Princeton subject headings:
Mexican newspapers--Mexico--Baja California.
Mexican periodicals.
Printing--Mexico--Baja California--History.