Columbia subject headings:
China--Population--History--Congresses.
Families--China--History--Congresses.
Families--Japan--History--Congresses.
Fertility, Human--China--History--Congresses.
Fertility, Human--Japan--History--Congresses.
Japan--Population--History--Congresses.
Marriage age--China--History--Congresses.
Marriage age--Japan--History--Congresses.
Harvard subject headings:
China--Population--History--Congresses.
Families--China--History--Congresses.
Families--Japan--History--Congresses.
Fertility, Human--China--History--Congresses.
Fertility, Human--Japan--History--Congresses.
Japan--Population--History--Congresses.
Marriage age--China--History--Congresses.
Marriage age--Japan--History--Congresses.
Princeton subject headings:
China--Population--History--Congresses.
Families--China--History--Congresses.
Families--Japan--History--Congresses.
Fertility, Human--China--History--Congresses.
Fertility, Human--Japan--History--Congresses.
Japan--Population--History--Congresses.
Marriage age--China--History--Congresses.
Marriage age--Japan--History--Congresses.