New interpretations of the stratigraphy and sedimentology of uppermost Jurassic to lowermost Upper Cretaceous strata in the San Juan Basin of northwestern New Mexico / by William M. Aubrey. X-ray diffraction studies of the <2-[mu]m fraction from the upper part of the Brushy Basin Member of the Upper Jurassic Morrison Formation and the Lower Cretaceous Burro Canyon Formation in the Four Corners area, Colorado / by Gary Skipp and W.M. Aubrey.
[Washington, DC] : U.S. G.P.O. ; Denver, CO : For sale by Book and Open-File Report Sales, U.S. Geological Survey, 1992.