- Asimov On Physics, Avon/Discus, 1978 - Asimov On Physics, Doubleday, 1976 Call It Science Fiction, or Sci-Fi, It's Big!, 1980, New Voices II: The Campbell Award
- Asimov On Science Fiction, Avon/Discus, Apr-82 - Asimov On Science Fiction, Doubleday, 1981 - Asimov On Science Fiction, Doubleday, 1981 Can You Spot the Family Resemblance?, 5-Mar-66, True
- Is Anyone There?, Ace, 1967 - Is Anyone There?, Doubleday, 1967 - Is Anyone There?, Ace, 1970 Catching Up With Newton, Dec-58, The Magazine of Fantasy and Science Fiction
- Asimov On Physics, Avon/Discus, 1978 - Asimov On Physics, Doubleday, 1976 - Fact And Fancy, Doubleday, 1962 - Fact And Fancy, Pyramid, 1963 - Fact And Fancy, Avon, Mar-72 Catskills in the Sky, Aug-60, The Magazine of Fantasy and Science Fiction
- Fact And Fancy, Doubleday, 1962 - Fact And Fancy, Pyramid, 1963 - Fact And Fancy, Avon, Mar-72 Censorship: Its Choking Grip, 18-Jul-81, Catastrophes
- Past, Present, And Future, Prometheus Books, 1987 Change of Air, Feb-76, The Magazine of Fantasy and Science Fiction
- The Planet That Wasn't, Avon/Discus, Dec-77 - The Planet That Wasn't, Doubleday, 1976 Checking in at Tomorrow's Hotel, Nov-81, Science Digest
- The Roving Mind, Prometheus Books, 1983 - The Roving Mind, Prometheus Books, 1983 Chemistry of the Void, Jan-86, 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 Chimpanzees, 4-May-74, TV Guide
- The Beginning And The End, Doubleday, 1977 - The Beginning And The End, Pocket Books, 1983 - The Beginning And The End, Pocket Books, Dec-78 Clone, Clone of My Own, Aug-79, The Magazine of Fantasy and Science Fiction
- The Sun Shines Bright, Avon/Discus, Jan-83 - The Sun Shines Bright, Doubleday, 1981 Cold Water, Feb-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 Colonizing the Heavens, 28-Jun-75, TV Guide
- The Beginning And The End, Doubleday, 1977 - The Beginning And The End, Pocket Books, 1983 - The Beginning And The End, Pocket Books, Dec-78 Coming Full Circle, Aug-84, The Magazine of Fantasy and Science Fiction
- The Subatomic Monster, Doubleday, 1985 - The Subatomic Monster, NAL/Mentor, Nov-86 Competition!, Jun-84, Those Amazing Electronic Thinking Machines
- Past, Present, And Future, Prometheus Books, 1987 Conceived in the Love Bed of Science, Feb-66, Science Fiction Writers of America Bulletin
- Is Anyone There?, Ace, 1967 - Is Anyone There?, Doubleday, 1967 - Is Anyone There?, Ace, 1970 Concerning Tolkien, Jul-91, Boys' Life
- Magic: The Final Fantasy Collection, Harper Prism, Jan-96 Constant as the Northern Star, Aug-73, The Magazine of Fantasy and Science Fiction
- Of Matters Great And Small, Doubleday, 1975 - Of Matters Great And Small, Ace, May-76 Cool Light, ? V14 No 1, Newsday
- Past, Present, And Future, Prometheus Books, 1987 Countdown, Sep-78, The Magazine of Fantasy and Science Fiction
- The Road To Infinity, Avon/Discus, Feb-81 - The Road To Infinity, Doubleday, 1979 Counting Chromosomes, Jun-68, The Magazine of Fantasy and Science Fiction
- The Solar System And Back, Avon/Discus, May-72 - The Solar System And Back, Avon/Discus, May-72 - The Solar System And Back, Doubleday, 1970 Counting the Eons, Nov-80, The Magazine of Fantasy and Science Fiction
- Counting The Eons, Avon/Discus, Mar-84 - Counting The Eons, Doubleday, 1983 Creativity Will Dominate Our Time After the Concepts of Work and Fun Have Been Blurred by Technology, Dec-83, Intergalactic Empires
- Past, Present, And Future, Prometheus Books, 1987 Creeping Censorship, 29-Apr-82, New Jersey Bell Journal
- The Roving Mind, Prometheus Books, 1983 - The Roving Mind, Prometheus Books, 1983 Crowded!, Mar-67, 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 Current Affairs, Mar-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 Cyrano de Bergerac, 2-Feb-74, Modern Maturity
- The Beginning And The End, Doubleday, 1977 - The Beginning And The End, Pocket Books, 1983 - The Beginning And The End, Pocket Books, Dec-78
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