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Creator
- Geological Survey (U.S.)1
- South Carolina Department of Transportation17
- United States. Agricultural Adjustment Administration2
- United States. Agricultural Stabilization and Conservation Service3
- United States. Army. Corps of Engineers2
- United States. Department of Agriculture1
- United States. Department of Agriculture. Agricultural Stabilization and Conservation Service1,902
- United States. Department of Agriculture. Agricultural Stabilization and Conservation Service<br>82
- United States. Department of Agriculture. Agricultural United States. Department of Agriculture. Stabilization and Conservation Service1
- United States. Dept. of Agriculture. Commodity Stabilization Service2
- United States. Dept. of Agriculture. Production and Marketing Administration1