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Author
- Geological Survey (U.S.)50
- Hackman, Robert J.10
- Tolbert, G. E.4
- Platt, J. N.3
- Sable, V. H.3
- Bates, C. E.2
- Bennett, H. S.2
- Detterman, J. S.2
- Luedke, Robert George, 1927-2
- Olson, A. B.2
- Orkild, Paul P.2
- Reed, John Calvin, 1930-2
- Berge Exploration Inc1
- Cross, Whitman, 1854-19491
- Marshall, C. H.1
- McGavock, E. H.1
- Miller, Calvin F.1
- Purington, Chester Wells, b. 18711
