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- Kansas Geological Survey1
- National Geophysical Data Center1
- National Geophysical and Solar-Terrestrial Data Center1
- New Mexico Energy Institute at New Mexico State University1
- North Dakota Geological Survey1
- Offield, Terry W.1
- Oregon. Department of Geology and Mineral Industries1
- University of Arizona. Bureau of Geology and Mineral Technology1
- University of Nebraska--Lincoln1
- University of Texas at Austin. Bureau of Economic Geology1
- Utah Geological and Mineral Survey1
