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First published 1975
Series Aton/Piers Anthony's Worlds of Chthon #2
Publisher Berkley Medallion
Format Paperback
Type Novel
Catalog ID Z3011
Cover art Richard Powers (artist)
Pages 198
Price $1.25
ISBN 0425030113


• "Berkley Medallion Edition, DECEMBER, 1975" • Printing not stated, no number line. • SBN on copyright page: 425-03011-3, 425-03011-125 on spine • Cover artist is not credited in the book. Powers' signature is visible on the back cover portion of the wraparound artwork (lower left corner)

Year Reviewer Publication
1976 Don D'Ammassa Delap's F & SF Review, April 1976
1979 Philip Stephensen-Payne Paperback Parlour, February 1979

Title Year Publisher Format Type Catalog ID Cover Artist Pages
Phthor Cover 1978 Panther Paperback Novel Alan Morgan 188
Phthor Cover 1982 Berkley Books Paperback Novel Clyde Caldwell 198
Phthor 1983 Berkley Books Paperback Novel 198
Phthor Cover 1985 Berkley Books Paperback Novel Clyde Caldwell 198
Phthor Cover 1986 Panther / Grafton Paperback Novel Alan Morgan 188
Phthor Cover 1987 Ace Books Paperback Novel John Jude Palencar 198
Phthor Cover 2014 Open Road Integrated Media eBook Novel
Phthor Cover 2014 Open Road Integrated Media eBook Novel 206