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    <abstract>This paper, a condensed report of the present state of the work in the Public Facility Task (formerly the Normative Location Modeling Task) at IIASA has three main aims: first, to build a general framework for location problems; second, to use this framework to unify existing location models; and, third, to use the framework to develop new, more general, and more meaningful location models. Suggestions are also given on how to introduce multiple services and multiple time periods in location problems. The multiactivity dynamic location models that this perspective generates is the subject of future research in the Public Facility Location Task. 

The first part of the paper gives a nontechnical description of the proposed general framework for analyzing location problems. The second  part describes mathematical models for static, single-service, facility location problems and their possible extensions and Improvements.</abstract>
    <date>1981</date>
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    <publisher>RR-81-028. Reprinted from Environment and Planning A, 13 [1981].</publisher>
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