Quantum Field Theory 2-05-Extension 5

New channel John Donoghue: title sample judged 'whole' (Full graduate-level lecture series on QFT and general relativity taught sequentially by an expert, with nearly every upl); 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.