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Author/Creator
- Geological Survey (U.S.)5
- Foley, Robert C.2
- Maps.com (Firm)2
- United States. Congress. Senate. Committee on Commerce2
- Albertson, George Howard1
- Bird, Kenneth J.1
- Howell, D. G.1
- Johnsson, Mark J.1
- Pierce, Richard A. (Richard Austin), 1918-20041
- Richmond, Christopher L.1
- Riehle, J. R.1
- Tebenʹkov, Mikhail Dmitrievich, -18721
- Williams, Dee M.1