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Samples in periodicals archive:
In accordance with Los Angeles County requirements, Intrado worked with public safety officials from the County to develop, load and manage geographic information system (GIS) shape files denoting public safety answering point (PSAP) emergency service number (ESN) boundaries and the associated boundary data for each Emergency Service Zone.
The completed address databases will be combined with county emergency service zone boundary data to create a Master Street Address Guide (MSAG).