Columbia subject headings:
Lungs--Dust diseases--Japan--History--20th century.
Lungs--Dust diseases--Law and legislation--Japan.
Trials--Japan--History--20th century.
Harvard subject headings:
Lungs--Dust diseases--Japan--History--20th century.
Lungs--Dust diseases--Law and legislation--Japan.
Trials--Japan--History--20th century.
Princeton subject headings:
Coal miners--Legal status, laws, etc.--Japan.
Coal mines and mining--Law and legislation--Japan.
Liability for hazardous substances pollution damages--Japan.
Lungs--Dust diseases--Law and legislation--Japan.