Science fact/fiction

Science fiction: before Christ and after 2001, an introduction / Ray Bradbury -- The gun without a bang / Robert Sheckley -- Crabs take over the island / Anatoly Dnieprov -- All watched over by machines of loving grace / Richard Brautigan -- EPICAC / Kurt Vonnegut, Jr. -- R.U.R. / Karel Capek -- The human factor / David Ely -- The thinking machine / Isaac Asimov -- Misbegotten missionary / Isaac Asimov -- Elegy / Charles Beaumont -- Aesthetics of the moon / Jack Anderson -- Constant reader / Robert Bloch…