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Novelettes: Nightfall by Isaac Asimov; Elsewhere by Caleb Saunders; Adam and no Eve by Norman L. Knight; Mission by M. Krulfeld; Test of the Gods by Raymond F. Jones/ Articles: The Sa King's armoured division (first of two parts) by L. Sprague de Camp; We're not all human by John W. Campbell Jr./ Serial: Methuselah's children by Robert Heinlein/ Readers' Departments: The editor's page; In times to come; The analytical laboratory; Brass tacks
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Novelettes: Black Destroyer by A.E. van Vogt; City of the Cosmic Rays by Nat Schachner; Greater than Gods by C.L. Moore/ Short Stories: Trends by Isaac Asimov; Lightship, Ho! by Nelson S. Bond; The Moth by Ross Rocklynne; When the half gods go by Amelia R. Long/ Articles: Tools for Brains by Leo Vernon; Geography for Time Travellers by Willy Ley/ Readers' Department: The Editor's Page; In Times to Come; The Analytical Laboratory; Brass Tacks and Science Discussions
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Contents: A trip to the center of the Earth by Jules Verne; Mesmeric revelation by Edgar Allen Poe; the crystal egg by H.G. Wells; The infinite vision by Charles C. Winn; The man from the atom (sequel) by G. Peyton Wertenbaker; Off on a comet (conclusion) by Jules Verne
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Stories: The raid from Mars by Miles J. Breuer; Valley of invisible men by Edmond Hamilton; Marooned off Vesta by Isaac Asimov; The strange flight of Richard Clayton by Robert Bloch; Trapped by telepathy by Eando Binder; The city that walked by Ed Earl Repp/ Features: The observatory; riddles of science; forecast; science quiz; questions and answers; meet the authors; discussions, correspondence corner; books on science; undersea salvager
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The skylark of space (a serial in three parts) part 1 by Edward Elmer Smith and Lee Hawkins Garby; The head by Joe Kleier; Armageddon - 2419 by Philip Francis Nowlan; Hicks invention with a kick: the perambulating home by Henry Hugh Simmons; The moth by H.G. Wells
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The plague of the living dead by A. Hyatt Verrill; The remarkable case of Davidson's eyes by H. G. Wells; John Jones' dollar by Harry Stephen Keeler; White gold pirate by Merlin Moore Taylor; The man in the room by Edwin Balmer and William B. MacHarg; Hicks invention with a kick: the automatic self-serving dining table by Henry Hugh Simmons; The Balloon Hoax by Edgar Allen Poe; The land that time forgot by Edgar Rice Burroughs
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Novelettes: The contract by H. Marne Hull; Circle of Confusion by Wesley Long; The Children's Hour by Lawrence O'Donnell; Deadline by Cleve Cartmill/ Short Stories: The Rulers by A. E. van Vogt; Controller by Eric Frank Russell/ Article: The Vanishing Yankees by George O. Smith/ Reader's Department: The Editor's Page; In Times to Come; The Analytical Laboratory; Brass Tacks