Notes: Data from Amazon, which gives an ISBN of 0-317-55226-0. WorldCat gives an ISBN of 0939879093 for the same book. When checked, Abebooks reported two copies of books with the WorldCat ISBN, and none with the Amazon ISBN, so we assume Amazon is in error. The two Abebook copies were from a limited, numbered edition of 50, so it is possible that there were two editions with two ISBN's published simultaneously. Bookfinder knew of both ISBN's, but could find no copies of the Amazon version, while finding 5 copies of the WorldCat version.