- The Roving Mind, Prometheus Books, 1983 - The Roving Mind, Prometheus Books, 1983 Perspective of Space, 1976, Extra-Terrestrial Intelligence: The First Encounter
- Life And Time, Avon/Discus, Dec-79 - Life And Time, Doubleday, 1978 Pills to Help Us Remember?, 9-Oct-66, New York Times Magazine
- Is Anyone There?, Ace, 1967 - Is Anyone There?, Doubleday, 1967 - Is Anyone There?, Ace, 1970 Plagiarism, Aug-85, Isaac Asimov's Science Fiction Magazine
- Gold, Harper Prism, Mar-95 Planets Have an Air About Them, Mar-57, Science World
- Only A Trillion, Abelard-Schuman, 1957 - Only A Trillion, Ace, 1976 Playing the Game, May-70, The Magazine of Fantasy and Science Fiction
- The Stars In Their Courses, Doubleday, 1971 - The Stars In Their Courses, Ace, Jul-72 - The Stars In Their Courses, Ace, 1976 Plotting, Jun-89, Isaac Asimov's Science Fiction Magazine
- Gold, Harper Prism, Mar-95 Poison in the Negative, Jul-85, The Magazine of Fantasy and Science Fiction
- Far As Human Eye Could See, Doubleday, 1987 - Far As Human Eye Could See, Windsor/Pinnacle Books, 1988 Poison!, 1984, Young Mutants
- Past, Present, And Future, Prometheus Books, 1987 Pompey and Circumstance, May-71, The Magazine of Fantasy and Science Fiction
- The Left Hand Of The Electron, Doubleday, 1972 - The Left Hand Of The Electron, Dell, Mar-74 - The Left Hand Of The Electron, Dell, Feb-76 Popularizing Science, Nov-83, TV Guide
- Past, Present, And Future, Prometheus Books, 1987 Portrait of the Writer as a Boy, Oct-66, The Magazine of Fantasy and Science Fiction
- Science, Numbers, And I, Ace, 1969 - Science, Numbers, And I, Doubleday, 1968 - Science, Numbers, And I, Ace, Jun-84 Pre-fixing It Up, Nov-62, The Magazine of Fantasy and Science Fiction
- Adding A Dimension, Doubleday, 1964 - Adding A Dimension, Lancer, 1969 - Adding A Dimension, Discus, Mar-75 - Adding A Dimension, Avon, 1977 - Adding A Dimension, Avon, - Asimov On Numbers, Doubleday, 1977 - Asimov On Numbers, Bell Publishing, 1982 - Asimov On Numbers, Pocket Books, 1983 - Asimov On Numbers, Pocket Books, Oct-78 Prediction, Jul-89, Isaac Asimov's Science Fiction Magazine
- Gold, Harper Prism, Mar-95 Prime Quality, Aug-71, The Magazine of Fantasy and Science Fiction
- The Left Hand Of The Electron, Doubleday, 1972 - The Left Hand Of The Electron, Dell, Mar-74 - The Left Hand Of The Electron, Dell, Feb-76 Proxima, Jan-79, The Magazine of Fantasy and Science Fiction
- The Road To Infinity, Avon/Discus, Feb-81 - The Road To Infinity, Doubleday, 1979 Pseudonyms, Jan-84, Isaac Asimov's Science Fiction Magazine
- Gold, Harper Prism, Mar-95 Psychohistory, Jul-88, Isaac Asimov's Science Fiction Magazine
- Gold, Harper Prism, Mar-95 Pure and Impure, 9-Jun-79, Manchete (Brazil, Portugese language)
- The Roving Mind, Prometheus Books, 1983 - The Roving Mind, Prometheus Books, 1983
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