1. Calloway Creek limestone and Ashlock and Drakes formations (Upper Ordovician) in south-central Kentucky Author/Creator: Weir, Gordon W. 1922-2011, (Gordon Whitney), author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1965 Resource Type: Book Access & Availability: Loading
2. Calloway Creek limestone and Ashlock and Drakes Formations (Upper Ordovician) in south-central Kentucky Author/Creator: Weir, Gordon W. 1922-2011. (Gordon Whitney) Publication/Creation: Washington : U.S. Govt. Print. Off, 1965 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1223-1224. Access & Availability: Loading
3. Cambrian and Ordovician rocks of southern Arizona and New Mexico and westernmost Texas Author/Creator: Hayes, Philip T. 1923- (Philip Thayer), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1975 Resource Type: Book Access & Availability: Loading
4. Cambrian and Ordovician rocks of southern Arizona and New Mexico and westernmost Texas Author/Creator: Hayes, Philip T. 1923- (Philip Thayer) Publication/Creation: Washington : U.S. Govt. Print. Off, 1975 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no.871-879. Access & Availability: Loading
5. Cambro-Ordovician strata in northwest Georgia and southeast Tennessee, the Knox Group and the Sequatchie Formation Publication/Creation: Atlanta, Ga. : Georgia Geological Society, [1992] Resource Type: Book Access & Availability: Loading
6. Capitol metabentonite in the Trenton Curdsville Limestone of central Kentucky Author/Creator: Conkin, James Elvin Publication/Creation: Louisville, Ky. : Department of Geology, University of Louisville, 1986 Resource Type: Book Edition: First edition. Access & Availability: Loading
7. Carbonate rocks of Cambrian and Ordovician age in the Lancaster quadrangle, Pennsylvania Author/Creator: Meisler, Harold, author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1968 Resource Type: Book Access & Availability: Loading
8. Carbonate rocks of Cambrian and Ordovician age in the Lancaster quadrangle, Pennsylvania Author/Creator: Meisler, Harold Publication/Creation: [Washington] : [U.S. Govt. Print. Off], [1968] Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no.1253-1256. Access & Availability: Loading
9. The Chopawamsic Formation-- : a new stratigraphic unit in the Piedmont of northeastern Virginia Author/Creator: Southwick, D. L. 1936- (David Leroy) Publication/Creation: [Washington] : [U.S. Govt. Print. Off], [1971] Resource Type: Book Access & Availability: Loading
10. The Chopawamsic Formation-- : a new stratigraphic unit in the Piedmont of northeastern Virginia Author/Creator: Southwick, D. L. 1936- (David Leroy), author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1971 Resource Type: Book Access & Availability: Loading