the major industrial and commercial liability can be accepted for any errors or omissions, companies than any other work. The information in or for the consequences thereo{ the book was submitted mostly by the companies themselves, completely free of charge. To all those ABOUT GRAHAM & TROTMAN L TO companies, which assisted us in our research Graham & Trotman Ltd, a member of the Kluwer operation, we express grateful thanks. To all those Academic Publishers Group, is a publishing individuals who gave us help as well, we are similarly organisation specialising in the research and very grateful. publication of business and technical information ,for industry and commerce in many parts of the Definition of a major company world.