The very popular book was re-released as a work in a 1995 edition, in 1998 (relations to sections below is unknown), and again in 2007 as both hardcover or softcover editions. Since the television series varied in content with each corresponding production run and release, it is likely the companion volumes (as is suggested by the plethora of ISBN codes) are also different works. This 1978 work's coverage deviates in some topics and details being both more in depth and a bit broader, from the lighter coverage of the episodes.
