1. Systematic mineralogy of uranium and thorium Author/Creator: Frondel, Clifford, 1907-2002, author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1958 Resource Type: Book Access & Availability: Loading
2. X-ray powder data for uranium and thorium minerals Author/Creator: Frondel, Clifford, 1907-2002, author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1956 Resource Type: Book Access & Availability: Loading