No statement of edition or printing. First edition (not stated).
The copyright page contains the complete Library of Congress Cataloging in Publication Data including the year of publication (1987), the ISBN (0-86553-191-9), and the LCCN (87-13608).
Month of publication from Locus1.
"Parts of this work have appeared, in slightly different form, in The Magazine of Fantasy and Science Fiction." is stated on the copyright page. A novelette with the same title was published in the April 1982 issue of that magazine.
"Jacket design by Gerry Hawkins (over) Jacket illustration by Bob Eggleton" printed on the back flap of the dustjacket.
Asimov's introduction starts on an unnumbered page. Page number here established by counting forward from the title page.
