1 Useless, do not buy this book.
Out of the twenty-five pages eight are acknowledgements and bibliography. Then the first page that does relate to the topic is half blank. Thought the document is padded with over large pictures of disco dancers and hitchhikers. After a brief summary and character sketch it begins to give background on the 70's in America. The book is British so this has little or no value. This document ends with six pages of reviews of which only one is specifically about hitchhikers guide. At the end there is a page advertising their other products. What little useful information this contains is not only buried under pages of crap but also not entirely accurate. Save you money and time don't bother with this.
