16/10/1975: Oxford Math Institute: Roger Penrose: Twistor theory, homotopy, homology, particles & curved S-T Add to clipboard MW0004744 · Item Part of Michael Wright Collection
16/10/1975: Oxford Math Institute: Roger Penrose: Twistor theory, homotopy, homology, particles & curved S-T (contd.) Add to clipboard MW0004744 · Item Part of Michael Wright Collection