Columbia subject headings:
Harvard subject headings:
COVID-19 Pandemic, 2020---Social aspects--Japan--Tokyo--History--21st century.
COVID-19 Pandemic, 2020---Social aspects--Japan--Tokyo.
Olympic Games (32nd : 2021 : Tokyo, Japan)
Olympics--Political aspects--Japan--History--21st century.
Princeton subject headings:
COVID-19 Pandemic, 2020---Social aspects--Japan--Tokyo--History--21st century.
Olympic Games (32nd : 2021 : Tokyo, Japan)
Olympics--Political aspects--Japan--History--21st century.