Columbia subject headings:
Harvard subject headings:
Assimilation (Sociology)--Government policy--Japan--Societies, etc.
Immigrants--Government policy--Japan--Societies, etc.
Japan--Emigration and immigration--Government policy--Societies, etc.
Koreans--Government policy--Japan--Societies, etc.
Princeton subject headings:
Japan--Ethnic relations--History.
Koreans--Japan--History.