21. 교육심리_최유림, 정혜원: 청소년활동이 협동역량에 미치는 영향: 창의성과 자아존중감의 매개효과를 중심으로

Round-17 hunt: picked; source: new-source search (r17: learned societies, museum/library lecture series, summer schools, scholarly conferences, newly covered languages); channel screens (sellers/exam/re-upload/devotional/vendor/events), provenance check, vendor/seller/devotional recheck and quality tier A passed; strict per-title check + final strict pass; oEmbed verified.