Masato Hachiya

1946

• Kokugo chofukugo no gokoseironteki kenkyu
• Kokugo chōfukugo no gokōseironteki kenkyū
• Kodai chimei no kokugo gakuteki kenkyū
• Kodaigo keiyōshi no kenkyū
• Kodaigo no nazo o toku
• Kokugo haseigo no go kōseironteki kenkyū
• Ronshū kodaigo no kenkyū