Columbia subject headings:
Harvard subject headings:
Japan--Commerce--Philippines--History.
Japan--Foreign relations--Philippines--History.
Philippines--Commerce--Japan--History.
Philippines--Foreign relations--Japan--History.
Trade routes--Japan--History.
Trade routes--Philippines--History.
Princeton subject headings:
Japan--Commerce--Philippines--History.
Japan--Foreign relations--Philippines--History.
Philippines--Commerce--Japan--History.
Philippines--Foreign relations--Japan--History.
Trade routes--Japan--History.
Trade routes--Philippines--History.