TY  - BOOK
AU  - Clark,Sandra H.B.
AU  - Mosier,Elwin L.
ED  - United States Geological Survey (U.S.)
TI  - Barite nodules in Devonian shale and mudstone of western Virginia
U1  - 553.662 
PY  - 1989///
CY  - Washington, D.C.
PB  - United States Geological Survey
KW  - Barite
KW  - Virginia
KW  - Appalachian Region
KW  - Geology, Stratigraphic
KW  - Devonian
ER  -