In this book Professor Goodwin eschewing fine-scale minutiae or classical mechanics, has addressed the big picture. His work deals with the great issues of: the class struggle a Ia Karl Marx; predator prey dramas of the Lotka- Volterra type; von Neumann's magisterial model of autonomous growth; Harrodian and Sraffian developments of Keynesian systems in their input-output aspects (or accelerator-multiplier aspects). Professor Lionello Punzo of a postwar generation provides additional chapters of multi-sector dynamics, working from and going beyond the aggregate models of Harrod, Domar, and Solow.