247 2 233 10 김성은 2023-11-09T17:00:41Z 2023-11-09T17:00:41Z 1999-12-01 Made available in DSpace on 2023-11-09T17:00:41Z (KST). No. of bitstreams: 0 2288-8795 99.10.2.233 ENG 한국청소년정책연구원 A Study for Adolescent Substance Use Prevention From the Longitudinal Perspective Article