Wataru Ōya

1949

• Kitamura Kaneko
• Hokuō kara kita senkyōshi
• Kangofutachi no nanpō sensen
• Kanno Suga to Isonokami Tsuyuko
• Kyōha Shintō to kindai Nihon
• Ōsaka Kawachi no kindai
• Ōsaka no kindai
• Taiwan no sengo Nihon
• Taiwan to Nihon