2.15 Soil Classification: Previous classifications - Limitations [ENG][한국어]
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Editorial review · 85% confidenceRound-13 hunt: picked; source: named-course long-video search (round-12 queries, single-hit channels, second prefilter); channel screens (sellers/exam/re-upload/devotional/vendor/events), provenance check, vendor/seller/devotional recheck and quality tier B passed; strict per-title check + final strict pass; oEmbed verified.
A 25-minute video from BENEATH the SURFACE - Carlos Santamarina: “2.15 Soil Classification: Previous classifications - Limitations [ENG][한국어]”.
Video by BENEATH the SURFACE - Carlos Santamarina, played through YouTube's embedded player.