It was reprinted by Tor in August 1997 .
It was first published in paperback by Tor Books in April 1990 ( the 1989 date appearing on the title page verso is erroneous ) .
It was reprinted by Tor Books in August 1997 .
It was first published in paperback by Tor Books in April 1990 ( the 1989 date appearing on the title page verso is erroneous ) .