Columbia subject headings:
Booksellers and bookselling--Mexico--Mexico City.
Bookstores--Mexico--Mexico City.
López Barrientos, Ubaldo.
Harvard subject headings:
Bookstores--Mexico--Mexico City--History.
Bookstores--Mexico--Mexico City.
Princeton subject headings:
Booksellers and bookselling--Mexico--Mexico City--History.
Bookstores--Mexico--Mexico City--History.