Columbia subject headings:
Expo (International Exhibitions Bureau) (1970 : Osaka, Japan)
Okamoto, Tarō, 1911-1996.
Harvard subject headings:
Expo (International Exhibitions Bureau) (1970 : Osaka, Japan)
Okamoto, Tarō, 1911-1996.
Princeton subject headings:
Expo (International Exhibitions Bureau) (1970 : Osaka, Japan)
Okamoto, Tarō, 1911-1996.