Marek Kordos, Historia matematyki - wykład 10 (Poza Europą)

New channel DeltamiEduPl: title sample judged 'whole' (Nearly all uploads are full lectures or expert talks on math/physics/astronomy from a respected popularization magazine,); passed a second screen for sellers/exam-prep/re-uploads; 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.