Lecture 13-14 탄소재료

Round-11 hunt: picked; channel-level screens (sellers/exam/re-upload/devotional/vendor/events), provenance check and vendor/seller/devotional recheck passed; strict per-title check + final strict pass; oEmbed verified.

A 116-minute video from Prologue: “Lecture 13-14 탄소재료”.

Video by Prologue, played through YouTube's embedded player.