Innovative Clusters : Drivers of National Innovation Systems The growth potential of countries increasingly depends on the effectiveness of their innovation systems in creating diffusing and using knowledge. A large share of market based or informal knowledge flows occur within industrial clusters that can be seen as reduced form innovation systems. Policies to stimulate innovation at national and local levels must both build on and contribute to the dynamics of innovative clusters. This book presents a series of papers written by policy makers and academic experts in the field that demonstrate why and how this can be done in different national contex