Masao Naka

1900 – 1963

• Doitsu sora no kyojin
• Kakkūki seibi
• Kōkū chishiki jiten
• Kōkū yōgo kaisetsu
• Minkan kōkū
• Seisōken hikō
• Shōkokumin kōkū benkyō
• Shōnen no kōsaku