Seihin anzen kyōiku jigyō tō ni kansuru chōsa hōkokusho
Subtitle: Heisei 7-nendo Keizai Kikakuchō itaku chōsa
Publisher: Shōhisha Kyōiku Shien Sentā
Published: 1996
Place of publication: [Tokyo?]
Language: jpn
Number of pages: 163