Petra

From Author Wars - https://authorwars.com/books/petra-1363911.html

Overview:

Title: Petra
Author: Greg Bear
Year: 1984
Type: Short Fiction

Editions/Publications:

1984 . Univers 1984 (1984, Greg Bear, J'ai Lu, ISBN-10: 2277216178, 415 pages, Paperback, Anthology)