M5P1 El ogro cinéfilo: la Cineteca Nacional en el entramado del echeverrismo

Round-15 hunt: picked; source: named-course long-video search (r15); 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.