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Author/Creator
- Geological Survey (U.S.)9
- Lopez, David A.[remove]9
- Jenness, Jane E.6
- California. Division of Mines and Geology5
- Grose, L. Trowbridge (Lucius Trowbridge), 1924-3
- Hills, Francis Allan2
- Roggensack, Kurt2
- Sargent, Kenneth A.2
- LaFortune, James R.1
- New Mexico. Bureau of Mines and Mineral Resources1
- University of Arizona. Bureau of Geology and Mineral Technology1