ABSTRACT
General models that attempt to describe several parts of the urban system and simulate the allocation and interaction between several land use activities would clearly be more useful tools of analysis. However, they are obviously more difficult to construct because of the complex links and interactions between the various urban subsystems. The Garin-Lowry model takes its name from Garin's reformulation of Lowry's model of metropolis. Lowry's original model was part of a study of the Pittsburgh region and consisted of a series of equations for deriving and allocating land use activities. Service employment can be regarded as serving the local population and is therefore directed to the production of goods and services for the residents in the study area. Basic employment is the rest of the employment in the region, and is directed to the production of goods and services for elsewhere.
