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Author/Creator
- Geological Survey (U.S.)11
- Georgia. Department of Transportation2
- Inman, Ernest J.2
- Meyer, D. F.2
- Outlaw, George S.2
- Albany (Ga.)1
- Buckwalter, Theodore F.1
- Carlson, Darrell D.1
- Columbus (Ga.)1
- DeKalb County (Ga.)1
- Eash, David A.1
- Galeone, Daniel G.1
- Hejl, H. R.1
- Iowa. Highway Division1
- Iowa. Highway Research Board1
- Jennings, Marshall E.1
- Moultrie (Ga.)1
- Pennsylvania. Bureau of Land and Water Conservation1
- Pennsylvania. Bureau of Oil and Gas Management1
- Sandstrom, Mark W. (Mark William)1