Analog Science Fiction, Oct, Dec. 1974, including Isaac Asimov special feature

Two issues of Analog Science Fiction/Science Fact from October and December 1974. Includes special features on Velikovsky: CP by Isaac Asimov and The Search for Truth by Frederic P. Jueneman, and On Mars With Mike Gilbert. Science Fiction authors include Joe Haldeman, Harlan Ellison, Fred Saberhagen, David Drake, Andrew J. Offutt, Randall Garrett, William Walling, Bob Buckley, Alex and Phyllis Eisenstein, and Alred Bester (part two of a three part serial). Science fact articles include Psychesomics: The Emerging Science of Consciousness by Norman Spinrad, Why We Won't Find Life on Mars by Richard C. Hoagland, and The Biopump Solution by Thomas A. Easton.