Tsuboi, Kiyotari

Fukugen taikei Nihon no shiro

Jōmon no mizuumi

Ronʼen kōkogaku

Kyūto hakkutsu

Maizo bunkazai to kokogaku

Zusetsu hakkutsu ga kataru Nihon shi

Bunka no genryū o saguru, jōmon to no taiwa

Asuka no tera to kokubunji (Kodai Nihon o hakkutsusuru)

Heijōkyō saigen