This book represents a selection of contributions to the Regional Science Association, European Summer Institute, held at Arco, Lake of Garda, Italy, from 17th to 23rd July 1988 on the theme of 'Theories and policies of technological development at the local level'. As such it forms a complementary volume to the collection of invited papers entitled 'The Spatial Context of Technological Development', edited by Professors Riccardo Cappellin and Peter Nijk.amp, and published by Avebury/Gower. The Summer Institute covered a broad range of themes and contributions from over 100 researchers. It has therefore not been our intention to represent or replicate these themes directly, but to provide as wide an international coverage of current research in regional science in the field of technological change as possible. The papers to be found in this book are drawn from the European Community, Eastern Europe, Scandinavia, North America and elsewhere. Inevitably, as the book was to be published in English, most of the editorial work has been undertaken at the Centre for Urban and Regional Development Studies at Newcastle University. In so doing, we have attempted to standardize the English as far as possible, whilst trying not to lose the characteristics of the styles of the individual authors.