Hideshi Narumi

1940

• Ainugo to Indo-Yōroppa sogo
• Ainu sogo to Indo-Yōroppa sogo
• Nichi-Ō-A hikaku gengo
• Nihon sogo to Indo-Yōroppa sogo
• Nihongo to Eigo no kigen
• Nihongo to Indo-Yōroppa-go
• アイヌ祖語とインド・ヨーロッパ祖語