TY  - RPRT
TI  - Resources on federal lands for five coal beds in the northern and central Appalachian Basin coal regions
AU  - Susan J. Tewalt
PY  - 2001
DO  - 10.3133/ofr01178
UR  - https://pubs.usgs.gov/publication/ofr01178
ID  - ofr01178
ER  -