Columbia subject headings:
Harvard subject headings:
Ethnology--Japan--Congresses.
Japan--Civilization--Congresses.
Japanese--Origin--Congresses.
Oka, Masao, 1898-1982--Congresses.
Princeton subject headings:
Ethnology--Japan--Congresses.
Japan--Civilization--Congresses.
Japanese--Origin--Congresses.
Oka, Masao, 1898-1982--Congresses.