21. Cambrian stratigraphy in southwestern Montana Author/Creator: Hanson, Alvin M. Publication/Creation: Butte : Montana School of Mines, 1952 Resource Type: Book Is Part Of: Bulletin (Montana Bureau of Mines and Geology), no. 33-39. Access & Availability: Loading
22. Contribution à l'étude du Cambrien inférieur et du Precambrien III de l'Anti-Atlas marocain Author/Creator: Hupé, Pierre Publication/Creation: Bagnolet (Seine) : Impr. L. Goulhot, 1952 Resource Type: Book Access & Availability: Loading
23. An appraisal of the Great Basin Middle Cambrian trilobites described before 1900, Author/Creator: Palmer, Allison R. Publication/Creation: Washington : U.S. Govt. Print. Off, 1954 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 264A-264J. Access & Availability: Loading
24. An appraisal of the Great Basin Middle Cambrian trilobites described before 1900 Author/Creator: Palmer, Allison R., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1954 Resource Type: Book Access & Availability: Loading
25. El sistema cámbrico : su paleogeografiía y el problema de su base; symposium Author/Creator: International Geological Congress Mexico City, Mexico) 1956 : (20th Publication/Creation: México : [publisher not identified], 1956-61. Resource Type: Book Access & Availability: Loading
26. Metamorphism and the origin of granitic rocks, Northgate District, Colorado Author/Creator: Steven, Thomas A. 1917-2013, (Thomas August), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1957 Resource Type: Book Access & Availability: Loading
27. Metamorphism and the origin of granitic rocks, Northgate District, Colorado Author/Creator: Steven, Thomas A. 1917-2013. (Thomas August) Publication/Creation: Washington : U.S. Govt. Print. Off, 1957 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 274. Access & Availability: Loading
28. Geology of an area along the Cartersville fault near Fairmont, Georgia Author/Creator: Smith, James William, 1934- Publication/Creation: [Place of publication not identified] : [publisher not identified], 1959 Resource Type: Book Access & Availability: Loading
29. Trilobites of the Upper Cambrian Dunderberg shale, Eureka District, Nevada Author/Creator: Palmer, Allison R., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1960 Resource Type: Book Access & Availability: Loading
30. Trilobites of the Upper Cambrian Dunderberg shale, Eureka District, Nevada, Author/Creator: Palmer, Allison R. Publication/Creation: Washington : U.S. Govt. Print. Off, 1960 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 334-337. Access & Availability: Loading