Columbia subject headings:
Harvard subject headings:
Middle class--China--Hong Kong--Congresses.
Middle class--East Asia--Cross-cultural studies--Congresses.
Middle class--Japan--Congresses.
Middle class--Korea (South)--Congresses.
Middle class--Malaysia--Congresses.
Middle class--Taiwan--Congresses.
Social classes--East Asia--Cross-cultural studies--Congresses.
Princeton subject headings:
Middle class--East Asia.
Middle class--Hong Kong.
Middle class--Singapore.
Middle class--Social condiions.
Middle class--Taiwan.
Social classes--East Asia.