1. Stratigraphy and structure of the western Kentucky fluorspar district Author/Creator: Trace, Robert Denny, 1917- author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1984 Resource Type: Book Access & Availability: Loading
2. The Supai Group of Grand Canyon Author/Creator: McKee, Edwin D. 1906-1984, (Edwin Dinwiddie), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1982 Resource Type: Book Access & Availability: Loading
3. The Supai Group of Grand Canyon Author/Creator: McKee, Edwin D. 1906-1984. (Edwin Dinwiddie) Publication/Creation: [Reston, Va.?] : U.S. Dept. of the Interior, Geological Survey, 1982 Resource Type: Book Access & Availability: Loading