Chūshō kigyō ni okeru haken rōdōsha no katsuyō ni kansuru chōsa kenkyū hōkokusho
Subtitle: Kōsei Rōdōshō Shokugyō Anteikyoku itaku
Publisher: Nihon Shokugyō Kyōkai
Published: 2004
Place of publication: Tōkyō
Language: jpn
Number of pages: 132