TY  - RPRT
TI  - Barite nodules in Devonian shale and mudstone of western Virginia
AU  - Sandra H. Clark
AU  - Elwin L. Mosier
PY  - 1989
DO  - 10.3133/b1880
UR  - https://pubs.usgs.gov/publication/b1880
ID  - b1880
ER  -