Rōdō kumiai no kyōiku katsudō
Subtitle: tsuketari rōdō kumiai no tsūshin kōza no junbi
By: Tōkyō-to Rōdōkyoku hen
Series: Rōdō kyōiku shiryō -- no. 1
Publisher: Tōkyō-to Rōdōkyoku
Published: 1948
Place of publication: Tōkyō
Language: jpn
Number of pages: 39