New York: Del Rey / Ballantine, (1983). First edition - "To his bosses at the Ochskahrt Memorial Academy he was Captain Bernard M. Gruenblum, Temporal Division - just another time traveler. But to the aliens from Yamaguchi he was, literally, God. So, if Bernie was going to medieval Japan, they were too." 242 pp. Cover art by Rick Sternbach. ISBN: 0-345303822.