Agglomeration, Technology and Business Groups, by Giulio Cainelli and Donato Iacobucci. Cheltenham, UK, & Northampton, MA: Edward Elgar, 2007Agglomeration, Technology and Business Groups, by GiulioCainelli and DonatoIacobucci . Cheltenham, UK, & Northampton, MA: Edward Elgar, 2007.