Columbia subject headings:
Harvard subject headings:
Japan--History--Restoration, 1853-1870--Biography--Dictionaries--Japanese.
Sakamoto, Ryōma, 1836-1867
Sakamoto, Ryōma, 1836-1867--Friends and associates--Dictionares--Japanese.
Statesmen--Japan--Biography--Dictionaries--Japanese.
Princeton subject headings:
Sakamoto, Ryōma, 1836-1867--Dictionaries.
Statesman--Japan--Dictionaries.