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You searched for: Author Heppen, John Remove constraint Author: Heppen, John 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. Subject Boundaries Remove constraint Subject: Boundaries Place California Remove constraint Place: California Place United States Remove constraint Place: United States Data type Polygon Remove constraint Data type: Polygon Year 1930 Remove constraint Year: 1930
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1. Historical United States County Boundaries, 1930

1930. 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 1930. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.