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You searched for: Author Louisiana State University (Baton Rouge, La.). Department of Geography and Anthropology. Remove constraint Author: Louisiana State University (Baton Rouge, La.). Department of Geography and Anthropology. Institution Stanford Remove constraint Institution: Stanford Place United States Remove constraint Place: United States Place Alabama Remove constraint Place: Alabama Year 1990 Remove constraint Year: 1990
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1. Historical United States County Boundaries, 1990

1990. Earle, Carville, Heppen, John, Louisiana State University (Baton Rouge, La.). Department of Geography and Anthropology., Otterstrom, Samuel, and Cao, Changyong. This polygon shapefile contains county boundaries for the United States in 1990. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.