It's been out of print some time (at least a couple of years) - and was published several years ago - so the information it contains is likely to be out of date too.
You can find information about all campsites in France (including municipals) from the Camping France website, where you can order the 'Guide Officiel.....' This gives details of over 11,000 campsites in France http://212.37.201.100/vente_guidesBoutique.jsp?id=20&lg=uk It's in French, but the normal camping guide format with symbols and abbreviations to tell you what you need to know.