Columbia subject headings:
Detectives--Japan--Tokyo--History--18th century.
Detectives--Japan--Tokyo--History--19th century.
Japan--History--Tokugawa period, 1600-1868.
Law--Japan--History.
Harvard subject headings:
Japan--History--Tokugawa period, 1600-1868
Law--Japan--History
Princeton subject headings:
Japan--History--Tokugawa period, 1600-1868.
Law--Japan--History.