Hiroshi Iwai

1940

• Gendai no rōdō, seikatsu to tōkei
• Jōhōka shakai no tōkeigaku
• Kakusa shakai no tōkei bunseki
• Koyō shitsugyō shihyō to fuantei shūgyō no kenkyū
• Rōdō tōkei no kokusai hikaku
• Rōdōryoku kaikyū kōsei to koyō kōzō