Columbia subject headings:
Harvard subject headings:
Asia--Commerce--New Spain--History.
Asia--Relations--New Spain--History.
New Spain--Commerce--Asia--History.
New Spain--Commerce--Pacific Area--History.
New Spain--Relations--Asia--History.
New Spain--Relations--Pacific Area--History.
Pacific Area--Commerce--New Spain--History.
Pacific Area--Relations--New Spain--History.
Pacific Ocean--Discovery and exploration--Spanish.
Princeton subject headings:
New Spain--Relations--Asia.
Philippines--Commerce--History--1521-1812.