Shitsugyō jōkyō jittai chōsa hōkoku
Subtitle: rōdōryoku chōsa rinji shitsumon
Series: Rōdōryoku chōsa shiryō -- no. 6
Publisher: Sōrifu Tīkeikyoku
Published: 1953
Place of publication: [Japan]
Language: jpn
Number of pages: 33