Columbia subject headings:
Harvard subject headings:
Hokkaidō Shinbunsha.
Police and the press--Japan--Hokkaido.
Police corruption--Japan--Hokkaido.
Princeton subject headings:
Hokkaidō Shinbunsha.
Police and the press--Japan--Hokkaido--History--21st century.
Police corruption--Japan--Hokkaido--History--21st century.