Geology and Petrology of the San Juan Region Southwestern Colorado (Geological Survey Professional Paper 258)
Washington DC: United States Government Printing Office, 1956. Paperback. 303pp. Quarto [29 cm] Gray and black printed wraps. Very good condition. With the large folding Table 21 in the rear pocket, but lacking plates 1 through 4 (originally also in pocket). A comprehensive geologic and petrologic study of the occurrence..... More