Masayuki Takagi

1930

• Sabetsu yōgo no kiso chishiki '99
• Dōwa mondai to dōwa dantai
• Kigyō kyōi shūdan
• Sabetsu yōgo no kiso chishiki '96
• Shinpen sabetsu yōgo no kiso chishiki
• Zengakuren to Zenkyōtō