Advanced igneous petrology03062024

New channel Sanjeewa Malaviarachchi: title sample judged 'whole' (Raw full-length university lectures on geology topics (isotope geology, petrology, mineralogy, crystallography) with tim); passed a second screen for sellers/exam-prep/re-uploads; 3 of 3 sampled transcripts showed teaching, 0 not; every title checked strictly; oEmbed verified.