Columbia subject headings:
Harvard subject headings:
Río de la Plata (Argentina and Uruguay)--Navigation--History.
Shipping--Rio de la Plata (Argentina and Uruguay)--History.
Princeton subject headings:
Navigation--Rio de la Plata (Argentina and Uruguay)--History.
Río de la Plata (Argentina and Uruguay)--Commerce.
Río de la Plata (Argentina and Uruguay)--History, Naval.