The fresh-water Tertiary of northwestern Texas : American Museum expeditions of 1899-1901. Bulletin of the AMNH ; v. 19, article 26
Cope, E. D. (Edward Drinker), 1840-1897 Cummins, W. F. (William Fletcher), 1840-1931 Geological Survey of Texas. Gidley Expeditions to the Llano Estacado (1899-1901) Gidley, James Williams, 1866-1931
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1903
English
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