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Author/Creator
- Geological Survey (U.S.)4
- United States. Bureau of the Census. Data User Services Division4
- Shaw, David3
- Wentworth, Carl M.3
- United States. Bureau of Transportation Statistics2
- Acevedo, William1
- Beeman, William R.1
- Pike, Richard J.1
- Showalter, P. K.1
- Tennyson, Marilyn Elizabeth, 1948-1
- United States. Bureau of the Census. Geography Division1
- Urban, Stephanie B.1