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Author/Creator
- Geological Survey (U.S.)4
- Bratton, Lisa1
- Georgia Geologic Survey1
- Graves, Robert P.1
- Hobba, W. A. (William A.)1
- Horn, M. A.1
- Jefferson County Commission (W. Va.)1
- Kozar, Mark D.1
- Macy, Jo Ann1
- Puerto Rico Industrial Development Company1
- Puerto Rico. Department of Agriculture1
- West Virginia. Department of Natural Resources1