Chingin sūgaku
Subtitle: chingin no jitsumu ni tazusawaru hitobito no tame ni
By: Rōdōshō Rōdō Tōkei Chōsabu kanshū ; Nikkan Rōdō Tsūshinsha hencho
Publisher: Nikkan Rōdō Tsūshinsha
Published: 1957
Place of publication: Tōkyō
Language: jpn
Number of pages: 235