TY  - RPRT
TI  - Stratigraphic framework and distribution of lignite in the Claiborne Group, Calhoun County, Arkansas
AU  - B.S. Hackman
PY  - 1982
DO  - 10.3133/ofr82787
UR  - https://pubs.usgs.gov/publication/ofr82787
ID  - ofr82787
ER  -