Columbia subject headings:
Firearms--Japan--History.
Japan--History--Period of civil wars, 1480-1603.
Japan--History--Tokugawa period, 1600-1868.
Harvard subject headings:
Firearms, Japanese--History.
Firearms--Japan--History.
Japan--History--Period of civil wars, 1480-1603.
Japan--History--Tokugawa period, 1600-1868.
Swordplay--Japan--History.
Princeton subject headings: