I: History -- Urbanization, Technological Progress, and Economic History -- Urbanization, Industrial Dynamics, and Spatial Development: A Company Life History Approach -- Migration and City Growth during Industrial Revolutions -- II: Theory -- Economic Growth in a Central Place System -- Supplementary Note on "Economic Growth in a Central Place System" -- Economies and Diseconomies of Agglomeration -- Structural Change in Urban Growth -- The Locational Impact of Declining Costs of Transportation and Communication -- III: Policy Implications -- Alternative Strategies for Coping with Traffic Congestion -- Competition among Locations: Objectives, Instruments, Strategies, Perspectives -- The Future of Planning -- About the Authors.