Shōwa 40-nen 2-gatsu kaisai "Rōshi Kankei Kenkyū Kaigi" gaihō
Publisher: Nihon Rōdō Kyōkai
Published: 1965
Place of publication: Tōkyō
Language: jpn
Number of pages: 136
Other titles: "Rōshi Kankei Kenkyū Kaigi" gaihō