In this book, first published in 1997, Kazimierz Z. Poznanski offers an integrated study of institutional change in the Polish ecomy since 1971. He examines the ecomic peak of the communist phase, the decline of the system, and the post-communist transition since 1989. Taking his analytical framework from evolutionary ecomics, he provides a complete re-evaluation of conventional views of communist ecomies and the post-communist transition. The book presents the communist ecomy as subject to major changes, particularly due to political pressures, and interprets its ecomic difficulties as related to underlying political decay. The ecomic 'shock therapy' of 1990 is seen as very much a continuation of earlier trends and pressures, which has led to probably an even deeper, though brief, ecomic collapse. This book will be of interest to ecomists and political scientists concerned with institutional transitions, as well as to students of East European and post-Soviet studies.