TY  - RPRT
TI  - Appalachian coal assessment: Defining the coal systems of the Appalachian basin
AU  - R. C. Milici
PY  - 2005
DO  - 10.1130/0-8137-2387-6.9
UR  - https://pubs.usgs.gov/publication/70035262
ID  - 70035262
ER  -