1. Upper Precambrian and Lower Cambrian strata in the southern Great Basin California and Nevada Author/Creator: Stewart, J. H., 1928-2013, author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1970 Resource Type: Book Access & Availability: Loading
2. Upper Proterozoic and Cambrian rocks in the Caborca region, Sonora, Mexico : physical stratigraphy, biostratigraphy, paleocurrent studies, and regional relations Author/Creator: Stewart, J. H., 1928-2013, author Publication/Creation: Washington : Department of the Interior, U.S. Geological Survey, 1984 Resource Type: Book Access & Availability: Loading
3. Uppermost Precambrian and lowest Cambrian rocks in southeastern Idaho Author/Creator: Oriel, Steven S., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1970 Resource Type: Book Access & Availability: Loading
4. Uranium deposits in the Dripping Spring quartzite, Gila County, Arizona Author/Creator: Granger, H. C. 1925- (Harry Clifford), author Publication/Creation: Washington, D.C. : United States Department of the Interior, Geological Survey, 1959 Resource Type: Book Access & Availability: Loading