The ITRE Source guide is sorted by country and then Alphabetically. Anyone who has ever worked with information knows how difficult it is to keep it updated and to get it ( even from people who know that it is in their own interest to supply it ) so see this as the direction to go in as opposed to the final solution. We at the ITRE have far more information ( e.g. e-mails but we do not publish that to stop the people being pestered with SPAM. . We are however totally reliant upon the companies themselves informing us of any changes so if you do come up against any errors please do ask the company to inform us. There is no charge to appear here so it is in their interest. If you would like your company to be included please send your details to sourcebook@itre.org We hope that this is helpful.