Columbia subject headings:
Harvard subject headings:
Japan--Foreign relations--1912-1945.
Japan--Foreign relations--History.
Matsuoka, Yōsuke, 1880-1946.
Matsuoka, Yūsuke, 1880-1946.
Statesmen--Japan--Biography.
Princeton subject headings:
Japan--Foreign relations--1912-1945.
Matsuoka, Yūsuke, 1880-1946.