Rōdō fukushi tō jittai chōsa kekka hōkokusho
Subtitle: Heisei 11-nen 6-gatsu chōsa
Publisher: Ōita-ken Shōkō Rōdō Kankōbu Rōsei Nōryoku Kaihatsuka
Published: 1999
Place of publication: [Ōita-shi]
Language: jpn
Number of pages: 102