Columbia subject headings:
Harvard subject headings:
Argentina--Imprints--Bibliography.
Paraguay--Imprints--Bibliography.
Printing--Argentina--History.
Printing--Paraguay--History.
Printing--Uruguay--History.
Uruguay--Imprints--Bibliography.
Princeton subject headings:
Argentina--Imprints--Bibliography.
Paraguay--Imprints--Bibliography.
Printing--Argentina--History.
Printing--Paraguay--History.
Printing--Uruguay--History.
Uruguay--Imprints--Bibliography.