Michio Okamura

Jōmon no seikatsushi

2002

Nihon Rettō no sekki jidai

2000

Nihon Kyūsekki jidaishi

Nihon Kyūsekki jidaishi

1999

Dekigoto jiten

Dekigoto jiten

Year unknown Kei Iwai, Akira Mochizuki, Toshio Shōji, Takaaki Abe, Sōzō Yanagawa, Minoru Sakata, Michio Okamura, Takehiko Yoshimura, Nobuo Irumada, Hiroko Ikegami, Fukuju Unno, Toshihiko Takano, Matsuo, Takayoshi, and Shōsaburō Kimura

Jinbutsu jiten

Jinbutsu jiten

Year unknown Sōzō Yanagawa, Minoru Sakata, Kei Iwai, Toshio Shōji, Takaaki Abe, Daisuke Inoue, Michio Okamura, Takehiko Yoshimura, Nobuo Irumada, Hiroko Ikegami, Fukuju Unno, Toshihiko Takano, Matsuo, Takayoshi, and Shōsaburō Kimura

Jōmon no Rettō bunka

Jōmon no Rettō bunka

Year unknown

Jōmon no urushi

Jōmon no urushi

Year unknown

Kenshō Nihon no zenki kyūsekki

Kenshō Nihon no zenki kyūsekki

Year unknown Hideji Harunari and Michio Okamura

Koko made wakatta Nihon no senshi jidai

Year unknown

Kyūsekki iseki "netsuzō jiken"

Kyūsekki iseki "netsuzō jiken"

Year unknown

Tesuto ni deru! chōjūyō 42-nin

Tesuto ni deru! chōjūyō 42-nin

Year unknown Kei Iwai, Toshio Shōji, Takaaki Abe, Michio Okamura, Takehiko Yoshimura, Nobuo Irumada, Hiroko Ikegami, Fukuju Unno, Toshihiko Takano, and Matsuo, Takayoshi