Columbia subject headings:
Chronologies.
Japan--History--1945---Chronology.
Japan--History--Heisei period, 1989-2019--Chronology.
Harvard subject headings:
Japan--History--1945---Chronology.
Japan--History--Heisei period, 1989---Chronology.
Princeton subject headings:
Japan--History--1945---Chronology.
Japan--History--Heisei period, 1989---Chronology.