Authors Year Title
King, Dunbar & Cloud 1944 Geology and Paleontology of the Permian area northwest of Las Delicias, southwestern Coahuila, Mexico. [King,R.E., Dunbar,C.O., Cloud,P. & Miller,A.K.]
Geological Society of America Special Papers, 52: X + 1-172, 29 text-figs., 45 pls.