Columbia subject headings:
Harvard subject headings:
Japan--Social conditions--21st century--Statistics.
Korea (South)--Social conditions--21st century--Statistics.
Social classes--Japan--Statistics.
Social mobility--Japan--Statistics.
Social stratification--Japan--Statistics.
Youth--Japan--Social conditions--21st century--Statistics.
Princeton subject headings:
Japan--Social conditions--21st century--Statistics.
Social classes--Japan--Statistics.
Social mobility--Japan--Statistics.
Social stratification--Japan--Statistics.
Statistics.
Youth--Japan--Social conditions--21st century--Statistics.