Petrology and depositional facies of siliciclastic rocks of the Middle Ordovician Simpson Group, Mazur Well, southeastern Anadarko Basin, Oklahoma / by Romeo M. Flores and C. William Keighin.
Imprint
[Reston, Va.?] : Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by the Books and Open-File Reports Section, 1989 [i.e. 1990]