Publishing History

This is a chart to show the publishing history of editions of works about this subject. Along the X axis is time, and on the y axis is the count of editions published. Click here to skip the chart.  This graph charts editions published on this subject.
Editions Published
Year of Publication

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Prolific Authors

who have written the most books on this subject
Gary Westfahl, 24 books
George Edgar Slusser, 19 books
Gordon Benson, 19 books
Phil Stephensen-Payne, 17 books
Eric S. Rabkin, 14 books
John Hamilton, 11 books
Brian Stableford, 9 books
Isaac Asimov, 9 books
Patrick Parrinder, 9 books
James E. Gunn, 9 books
David Seed, 9 books
Samuel R. Delany, 8 books
Martin H. Greenberg, 7 books
Damien Broderick, 7 books
George Slusser, 7 books
Michael Ashley, 7 books
Gerry Canavan, 7 books
Phil Stephensen-Payne, 7 books
Elana Gomel, 6 books
M. Keith Booker, 6 books
Gordon, Jr. Benson, 6 books
Marleen S. Barr, 6 books
Joan Gordon, 5 books
Farah Mendlesohn, 5 books
Robert Silverberg, 5 books