Teinenrei hikō shōnen ni kansuru kenkyū chōsa
Series: Seishōnen mondai kenkyū chōsa hōkokusho
Publisher: Sōmuchō Seishōnen Taisaku Honbu
Published: 1986
Place of publication: [Tokyo]
Language: jpn
Number of pages: 155
Notes: Cover title.

"Itaku kenkyū."