At first glance there is a limited, but well-defined, number of clusters; the areas on the boundary between Vicenza and Verona specialised in tanning stand out clearly, as do those for the production of gold jewellery in Vicenza and shoe-making along the Riviera del Brenta as well as in several municipalities of the provinces of Treviso and Verona; and lastly in the province of Rovigo there are cl