Book excerpt: This book presents an international study of economic growth and income distribution, with a focus on North-South differences. The text discusses the topic from a purely theoretical perspective, comparing the relations between economies by using formal mathematical models. Four well-known approaches are discussed: neoclassical, neo-Marxian, neo-Keynesian and Kalecki-Steindl. Models are developed to highlight and contrast the basic features of these approaches. Subsequent chapters systematically introduce inflation, technological change, sectoral issues, and international trade, building upon these simple one-sector models. This book will be of value to anyone with an interest in areas such as developmental economics, growth, trade and political economy.