TY  - BOOK
AU  - Pollastro,Richard M.
ED  - United States.
TI  - Composition, clay mineralogy ,and diagenesis of the Simpson Group (Middle Ordovician), Grady County, Oklahoma
U1  - 552.5 
PY  - 1991///
CY  - [Washington]
PB  - United States Government Printing Office
KW  - Sandstone
KW  - Anadarko Basin
KW  - Geology, Stratigraphic
KW  - Ordovician
KW  - Geology
KW  - Oklahoma
KW  - Grady County
KW  - Simpson Group
ER  -