Year of publication stated on the title page. Month of publication from the code "0885" printed at the bottom of the back flap of the dust jacket.
The copyright page contains the complete Library of Congress Cataloging in Publication Data including the ISBN (0-385-19890-6) and the LCCN: 85-4346. There is no record of this control number on the LOC website. (Perhaps because the Universe series is handled as a periodical [serial] for library purposes.)
Gutter code "P028" indicates a printing in July 1985.
