Shūkyū futsukasei rōdō jikan tanshuku no jittai to hōkō
Subtitle: chūshō kigyō no shūkyū futsukasei, rōdō jikan tanshuku ni kansuru kenkyū hōkokusho.
Publisher: Zenkoku Chūshō Kigyō Dantai Chūōkai
Published: 1981
Place of publication: [Tokyo?]
Language: jpn
Number of pages: 251