1. 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
2. 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
3. The Cambrian rocks of Pennsylvania Author/Creator: Walcott, Charles D. 1850-1927, (Charles Doolittle), author Publication/Creation: Washington, D.C. : Department of the Interior, United States Geological Survey, 1896 Resource Type: Book Access & Availability: Loading
4. The Cambrian rocks of Pennsylvania Author/Creator: Walcott, Charles D. 1850-1927. (Charles Doolittle) Publication/Creation: Washington : Govt. Print. Off, 1896 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 130-136. Access & Availability: Loading