1. Fusulinidae from the Graford Formation and Winchell Limestone, Canyon Group, Upper Pennsylvanian, in Brown County, Texas Author/Creator: Myers, Donald A., 1921- author Publication/Creation: Washington : U.S. Department of the Interior, Geological Survey, 1967 Resource Type: Book Access & Availability: Loading
2. Fusulinidae from the Graford Formation and Winchell Limestone, Canyon Group, Upper Pennsylvanian, in Brown County, Texas, Author/Creator: Myers, Donald A., 1921- Publication/Creation: Washington : U.S. Govt. Print. Off, 1967 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 573 A-D. Access & Availability: Loading