Yūgurui no anzensei kakuho ni kansuru kokunaigai no seido chōsa
Subtitle: Heisei 9-nendo itaku chōsa hōkokusho
Publisher: Tōkyō-to Seikatsu Bunkakyoku Shōhi Seikatsubu
Published: 1998
Place of publication: Tōkyō
Language: jpn
Number of pages: 226