Abstract
This paper extends the Garin–Lowry model of spatial activity allocations along its demographic dimension. The zonal distribution of activities in the nonbasic (service) sector is shown to be stable irrespective of variations in the zonal distribution of activities in the basic (export) sector. This conjectured regularity is explained by observed similarities in the rates of consumption and in the demographic structure of the population in various zones of a region. Also variations in patterns of journeys from work to home do not appear to have a significant effect on nonbasic spatial-activity allocations.

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