1. Cambrian trilobites of east-central Alaska, Author/Creator: Palmer, Allison R. Publication/Creation: Washington : U.S. Govt. Print. Off, 1968 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 559 A-B. Access & Availability: Loading
2. Cambrian trilobites of east-central Alaska Author/Creator: Palmer, Allison R., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1968 Resource Type: Book Access & Availability: Loading
3. Cambrian rocks of the Pioche mining district, Nevada Author/Creator: Merriam, C. W. 1905-1974, (Charles Warren), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1964 Resource Type: Book Access & Availability: Loading
4. Cambrian rocks of the Pioche mining district, Nevada Author/Creator: Merriam, C. W. 1905-1974. (Charles Warren) Publication/Creation: Washington : U.S. Govt. Print. Off, 1964 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 466-472. Access & Availability: Loading