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Shapefile
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Subject
Utilities and Communication
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Place
Puerto Rico
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Year
2014
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1. Petroleum Refineries, United States, 2014
2014. National Energy Information Center (U.S.). This point shapefile represents all operating petroleum refineries located in the United States, Puerto Rico, Guam, the U.S. Virgin Islands, and ot... National Energy Information Center (U.S.).
2. United States Telephone Area Code Boundaries, 2014
2014. Environmental Systems Research Institute (Redlands, Calif.) and TomTom North America, Inc. This polygon shapefile contains the boundaries of telephone area codes in the United States. They are also known as Numbering Plan Areas (NPA). The... Environmental Systems Research Institute (Redlands, Calif.).