TY  - RPRT
TI  - Thermal maturity patterns in Pennsylvanian coal-bearing rocks in Alabama, Tennessee, Kentucky, Virginia, West Virginia, Ohio, Maryland, and Pennsylvania
AU  - Leslie F. Ruppert
AU  - Michael H. Trippi
AU  - James C. Hower
AU  - William C. Grady
AU  - Jeffrey R. Levine
PY  - 2014
DO  - 10.3133/pp1708f.2
UR  - https://pubs.usgs.gov/publication/pp1708F.2
ID  - pp1708F.2
ER  -