1. Jasperoid in the United States : its characteristics, origin, and economic significance Author/Creator: Lovering, T. G. 1921-1996, (Tom Gray), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1972 Resource Type: Book Access & Availability: Loading
2. John Wesley Powell's exploration of the Colorado River Author/Creator: Rabbitt, Mary C. Publication/Creation: Washington, D.C. : U.S. Dept. of the Interior, U.S. Geological Survey, [1995?] Resource Type: Book Access & Availability: Loading
3. John Wesley Powell's exploration of the Colorado River Author/Creator: Geological Survey (U.S.) Publication/Creation: [Washington] : [for sale by the Supt. of Docs., U.S. Govt. Print. Off], [1974] Resource Type: Book Access & Availability: Loading
4. Journal of research Author/Creator: Geological Survey (U.S.) Publication/Creation: [Washington] : [For sale by the Supt. of Docs., U.S. Govt. Print. Off] Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
5. Jurassic paleobiogeography of the conterminous United States in its continental setting Author/Creator: Imlay, Ralph W. 1908-1989, (Ralph Willard), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1980 Resource Type: Book Access & Availability: Loading