Denden Kōsha no rōshi kankei to rōdō kumiai
By: Zenkoku Denki Tsūshin Rōdō Kumiai, Rōdō Chōsa Kyōgikai hen.
Publisher: Nihon Rōdō Kyōkai
Published: 1982
Place of publication: Tokyo
Language: jpn
Number of pages: 560