Focusing upon the central problems of effective community practice in town and country areas, the four speeches in this collection emphasize some key analytical notions in what has been termed an interactional or activity field conception of community. Among the ideas emphasized are the complexity/integration and the coordination/integration of community structure and the coordinating association and the service agency as key organizations in community development. The four papers are titled and sub-titled as follows: (1) "Community Development: Dialectics in Practice and Theory" (Technology and Community Structure; Community Structures and Processes; Multiple Fields and Goal-Structure Interaction; Community Coordination and Development Models); (2) "Two Basic Structures in the Development of the Modern Community" (Community Coordinating Structures; The Service Agency; Basic Structures, Development Models, and Goal Attainment); (3) "The Multi-County Area as a Community" (The Social Field Perspective; The Emerging Rural-Urban Locality; Two or More Fields in a Multicounty Area; Type of Field and Nature of Integration; Integration of the Multicounty Area); (4) "The Community Association and Comprehensive Development" (Structural Dimensions; New Structures and Projects; The Coordination of Organization; Use of External Resources; Local Development and Community Theory). (JC)