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  Partner: UNT Libraries
 Resource Type: Image
 Language: English
 Collection: Texas History Collection
Cross Sections on the Lines A-A. B-B. Etc. PL. LXVI, Showing Geological Structure of the Black and Grand Prairies.
Profiles to illustrate section lines on Plate 66, Geologic Map of the Black and Grand Prairies of Texas. texashistory.unt.edu/ark:/67531/metapth130194/