Yūsu wāku to wakamono jiritsu shien
Subtitle: seishōnen sōgō taisaku suishin hōan to kongo no kadai
By: Matsui Yūjirō
Series: Chōsa to jōhō -- dai 642-gō = -- Issue brief -- no. 642; Chōsa to jōhō -- dai 642-gō.
Publisher: Kokuritsu Kokkai Toshokan Chōsa oyobi Rippō Kōsakyoku
Published: 2009
Place of publication: Tōkyō
Language: jpn
Number of pages: 11
Notes: Includes bibliographical references.