Columbia subject headings:
Camphor industry and trade--Japan.
Government monopolies--Japan.
Salt industry and trade--Japan.
Tobacco industry--Japan.
Harvard subject headings:
Camphor industry and trade--Japan.
Government monopolies--Japan.
Salt industry and trade--Japan.
Tobacco industry--Japan
Princeton subject headings:
Camphor industry and trade--Japan.
Government monopolies--Japan.
Salt industry and trade--Japan.
Tobacco industry--Japan.