Iwao Kōyama

1905

• Atarashii Nihon no shinro
• Botsuraku no mondai o megutte
• Bunka ruikeigaku, koō no genri
• Chō kindai no tetsugaku
• Hēgeru
• Kenpō kaisei wa naze hitsuyō ka
• Kokusai teki chūritsu no kenkyū
• Kyōiku tetsugaku
• Marukushizumu no chōkoku
• Nihon minzoku no kokoro
• Nihon no kadai to sekaishi
• Nishida tetsugaku