E Guevara, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-28/06, Austin, TX SPRABERRY AND DEAN SANDSTONES (LOWER PERMIAN, LEONARDIAN), MIDLAND.
H. S. Nance, Bureau of Economic Geology, PBGSP Annual Meeting, 2/27-8/06, Austin, TX
Stephen C. Ruppel Bureau of Economic Geology The Jackson School of Geosciences