Columbia subject headings:
Harvard subject headings:
Diplomats--Japan--Biography
Japan--Foreign relations--Russia.
Masuda, Kōsai, approximately 1821-1885
Russia--Foreign relations--Japan.
Princeton subject headings:
Diplomats--Japan--Biography.
Japan--Foreign relations--Russia.
Masuda, Kōsai, approximately 1821-1885.
Russia--Foreign relations--Japan.