21. Pennsylvanian and Early Permian paleogeography of the Uinta-Piceance Basin region, northwestern Colorado and northeastern Utah Author/Creator: Johnson, Samuel Y., author Publication/Creation: Washington, DC : U.S. G.P.O. ; Denver, CO : For sale by Book and Open-File Report Sales, U.S. Geological Survey, 1992 Resource Type: Book Access & Availability: Loading
22. Pennsylvanian and Early Permian paleogeography of the Uinta-Piceance Basin region, northwestern Colorado and northeastern Utah Author/Creator: Johnson, Samuel Y., author Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 1992 Resource Type: Book Access & Availability: Loading
23. Pennsylvanian and Permian rocks of the southern Inyo Mountains, California Author/Creator: Merriam, C. W. 1905-1974. (Charles Warren) Publication/Creation: Washington [D.C.] : U.S. G.P.O., 1957 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1061. Access & Availability: Loading
24. Pennsylvanian and Permian rocks of the southern Inyo Mountains, California Author/Creator: Merriam, C. W. 1905-1974, (Charles Warren), author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey Resource Type: Book Access & Availability: Loading
25. Pennsylvanian and Permian stratigraphy of the northern Argus Range-Darwin Canyon area, California Author/Creator: Stone, Paul, 1947- author Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1987 Resource Type: Book Access & Availability: Loading
26. Pennsylvanian carbonates, paleoecology, and rugose colonial corals, north flank, eastern Brooks Range, Arctic Alaska Author/Creator: Armstrong, Augustus K., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1972 Resource Type: Book Access & Availability: Loading
27. Pennsylvanian carbonates, paleoecology, and rugose colonial corals, north flank, eastern Brooks Range, Arctic Alaska, Author/Creator: Armstrong, Augustus K. Publication/Creation: Washington : U.S. Govt. Print. Off, 1972 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 744-749. Access & Availability: Loading
28. Pennsylvanian cyclic platform deposits of Kansas and Nebraska : guidebook Publication/Creation: [Lawrence] : Kansas Geological Survey, University of Kansas, 1979 Resource Type: Book Access & Availability: Loading
29. Pennsylvanian formations of southwest Virginia Author/Creator: Miller, Ralph L. 1909-1991, (Ralph LeRoy), author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969 Resource Type: Book Access & Availability: Loading
30. Pennsylvanian formations of southwest Virginia Author/Creator: Miller, Ralph L. 1909-1991. (Ralph LeRoy) Publication/Creation: Washington : U.S. Govt. Print. Off, 1969 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1279-1285. Access & Availability: Loading