Columbia subject headings:
Emergency management--Japan--History--21st century.
Nuclear power plants--Accidents--Government policy--Japan--History--21st century.
Tsunami hazard zones--Japan--History--21st century.
Harvard subject headings:
Emergency management--Japan
Nuclear power plants--Accidents--Government policy--Japan.
Tsunami hazard zones--Japan.
Princeton subject headings:
Emergency management--Japan.
Nuclear power plants--Accidents--Government policy--Japan.
Tsunami hazard zones--Japan.