Published in 2000, a selection of contributions presented in 1998 at the conference of Udine entitled, 'The Development of Industrial Districts in Italy'. The theoretical aim of the book is to explain the dynamic mechanism of the growth of Italian 'industrial districts' shifting attention from 'Marshallian industrial districts', where focus is not just on the decentralization of production among small-batch firms. Determinant factors explaining growth seem related to the ways in which firms explore the markets, learn tacit knowledge, network with subcontractors and make incremental innovations. In substance, the work offers a cognitive approach to the issue of industrial districts.