por Hanson, Norwood Russell [autor] | Ellis, Brian [autor] | Putnam, Hilary [autor] | Hawkins, David [autor] | Morrison, Philip [autor] | Feyerabend, Paul, 1924-1994 [autor] | Rescher, Nicholas [autor] | Colodny, Robert Garland [editor].
por Margulis, Lynn, 1938-2011 [autor] | Sagan, Dorion, 1959- [autor] | Morrison, Phylis [prologuista] | Morrison, Philip [prologuista].