por Feynman, Richard P. (Richard Phillips), 1918-1988 [autor] | Leighton, Robert B [prologuista] | Sands, Matthew L. (Matthew Linzee) [prologuista].
por Feynman, Richard P. (Richard Phillips), 1918-1988 [autor] | Leighton, Robert B [colaborador] | Penrose, Roger [prologuista].