Columbia subject headings:
Chemical workers--Labor unions--Japan--Minamata-shi.
Shin Nitchitsu Minamata Kōjō Rōdō Kumiai.
Harvard subject headings:
Chemical workers--Labor unions--Japan--Minamata-shi.
Shin Nitchitsu Minamata Kōjō Rōdō Kumiai.
Princeton subject headings:
Chemical workers--Labor unions--Japan--Minamata-shi.
Shin Nitchitsu Minamata Kōjō Rōdō Kumiai.