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Author
- Boundary Solutions, Inc.65
- Cao, Changyong21
- Earle, Carville21
- Heppen, John21
- Louisiana State University (Baton Rouge, La.). Department of Geography and Anthropology.21
- Otterstrom, Samuel21
- National Atlas of the United States15
- Geological Survey (U.S.)12
- Sanborn Map Company12
- New Jersey. Department of Environmental Protection9
- Platts4
- Geographic Data Technology, Inc. (GDT)3
- U.S. Census Bureau. Geography Division3
- Arndt, Raymond E.2
- Bawiec, Walter J.2
- Beikman, Helen M.2
- Gap Analysis Program (U.S.)2
- Godt, Jonathan W.2
- King, Philip B.2
- Schruben, Paul G.2