Days of Stone
From Author Wars - https://authorwars.com/books/days-of-stone-81200.html
Variant Titles:
Editions/Publications:
- Unknown. Fantastic, January 1979 (Unknown, Jack Dann, Ultimate Publishing Co., Inc., $1.25, 134 pages, digest, MAGAZINE)
- Unknown. Timetipping (Unknown, Jack Dann, Doubleday, ISBN-10: 0385143389, $8.95, xiii+236 pages, Hardcover, Collection)