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"Population research and analysis and preparation of map ... by George A. Gendron, assisted by Edmond O. Burger; cartography by Walter R. Pilcher.|~|Includes 2 insets, county outline map, index with population figures, and notes.|~|U.S. Department of Agriculture, Bureau of Agricultural Economics, Division of Land Economics, with the valuable assistance of the U.S. Forest Service.
United States. Bureau of Agricultural Economics. Division of Land Economics.