Rōdōryoku chōsa kaisetsu
By: Sōrifu Tōkeikyoku hen
Series: Tōkeikyoku chōsa shiryō -- 5-gō; Tōkeikyoku chōsa shiryō -- 5-gō.
Publisher: Sōrifu Tōkeikyoku
Published: 1950
Place of publication: Tōkyō
Language: jpn
Number of pages: 102