A Bookcrossing book that I finished this week. The author is creative with alien species -- even sentient plants and silicon-based life forms are included in the mix. The cover art on this copy is fairly hideous. In any case, the original copyright date is 1977, and the book is still in print at Amazon, so it's outlasted poor choices at the publisher. Not a momentous work of fiction, but entertaining, with a nice twist at the end.
Midnight at the Well of Souls, by Jack Chalker