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- Swithinbank, Williams, Ferrigno2
- Tipping, Robert G.2
- Bauer, Emily J.1
- Berner, David J.1
- Bradt, Randy1
- GIS Lab, Newman Library, Baruch CUNY1
- Gao, Yongli1
- Geological Survey (U.S.)1
- Green, Jeffrey A.1
- Harris, K.L1
- Illinois State Geological Survey1
- Lively, R. S.1
- Michigan Center for Geographic Information1
- Minnesota Geological Survey1
- Ohio. Division of Geological Survey1
- Setterholm, Dale R.1
- United States. National Park Service1