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Author/Creator
- Maps.com (Firm)4
- Egan, Kristine, 1965-2
- Estaville, Lawrence E. (Lawrence Ernest)2
- Galaviz, Abel A., 1951-2
- Bankey, Viki1
- Crustal Imaging and Characterization Team (U.S.)1
- Geological Survey (U.S.)1
- United States. Bureau of the Census. Data Preparation Division1
- United States. Bureau of the Census. Geography Division1