Columbia subject headings:
Conservationists--Japan--Biography.
Copper mines and mining--Environmental aspects--Japan--Nikkō-shi--History.
Environmental policy--Japan--Watarase River Watershed--History.
Tanaka, Shōzō, 1841-1913.
Harvard subject headings:
Civil rights workers--Japan--Biography
Environmental policy--Japan--Yanaka-mura--Citizen participation--History.
Tanaka, Shōzō, 1841-1913.
Princeton subject headings: