Kōji Inaoka

Hitomaro no hyōgen sekai

Hitomaro no hyōgen sekai

Year unknown

Hitomaro no kōbō

Hitomaro no kōbō

Year unknown

Jōdai no bungaku

Jōdai no bungaku

Year unknown Masatoshi Kinoshita and Kōji Inaoka

Kodai Nihon no moji sekai

Year unknown Minami Hirakawa and Kōji Inaoka

Koe to moji

Year unknown

Man'yō no utakotoba jiten

Man'yō no utakotoba jiten

Year unknown Kōji Inaoka and Hashimoto, Tatsuo

Man'yōshū

Year unknown

Man'yōshū hikkei

Man'yōshū hikkei

Year unknown

Manʼyō hyōki ron

Manʼyō hyōki ron

Year unknown

Manʼyōshū

Manʼyōshū

Year unknown Kōji Inaoka and Ariyoshi, Tamotsu

Manʼyōshū

Manʼyōshū

Year unknown

Manʼyōshū jiten

Manʼyōshū jiten

Year unknown

Manʼyōshū o manabu

Manʼyōshū o manabu

Year unknown Haku Itō and Kōji Inaoka

Manʾyō hyōki ron

Manʾyō hyōki ron

Year unknown

Manʾyōshū

Manʾyōshū

Year unknown

Manʾyōshū no sekai

Manʾyōshū no sekai

Year unknown

Nihon jōdai bungaku ronshū

Nihon jōdai bungaku ronshū

Year unknown

Nihon shinwa hikkei

Nihon shinwa hikkei

Year unknown

Shinwa

Shinwa

Year unknown Kōji Inaoka, Taryō Ōbayashi, and Teiji Ichiko

Yamanoue no Okura

Yamanoue no Okura

Year unknown

万葉集事典

万葉集事典

Year unknown

日本神話必携

日本神話必携

Year unknown