Kottlowski, F.E., 1962, Pennsylvanian rocks of southwestern New Mexico and southeastern Arizona, in Branson, C.C., ed., Pennsylvanian System in the United States - a symposium: American Association of Petroleum Geologists, p. 331-371.
Kottlowski, F.E., 1962, Pennsylvanian rocks of southwestern New Mexico and southeastern Arizona, in Branson, C.C., ed., Pennsylvanian System in the United States - a symposium: American Association of Petroleum Geologists, p. 331-371.
Sedimentary, Stratigraphy, Pennsylvanian,