Columbia subject headings:
Ibaraki-ken (Japan)--History.
Japan--History--1185-1600.
Samurai--History--To 1500.
Harvard subject headings:
Ibaraki-ken (Japan)--History.
Japan--History--1185-1600.
Samurai--History--To 1500.
Princeton subject headings:
Ibaraki-ken (Japan)--History.
Japan--History--1185-1600.
Samurai--History--To 1500.