"Sukoyaka Oyako 21" kanren shiryō
Subtitle: boshi hoken repōto 2007.
Contributors: Japan. Kōsei Rōdōshō. Koyō Kintō Jidō Kateikyoku. Boshi Hokenka.
Publisher: Kōsei Rōdōshō Koyō Kintō Jidō Kateikyoku Boshi Hokenka; Sukoyaka Oyako 21 Suishin Kyōgikai Jimukyoku
Published: 2007
Place of publication: [Tokyo]
Language: jpn
Number of pages: 270