Online link | https://doi.org/10.3133/ofr20151121 |
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Description | Locations of known phosphate occurrences in this area, with geologic units in which such deposits may occur. |
Originators | Orris, Greta J., Dunlap, Pamela, Wallis, John C., Wynn, Jeffrey C. |
Publication | U.S. Geological Survey Open-File Report 2015-1121 |