TY  - RPRT
TI  - Coal and coalbed-methane resources in the Appalachian and Black Warrior basins: maps showing the distribution of coal fields, coal beds, and coalbed-methane fields
AU  - Michael H. Trippi
AU  - Leslie F. Ruppert
AU  - Robert C. Milici
AU  - Scott A. Kinney
PY  - 2014
DO  - 10.3133/pp1708d.1
UR  - https://pubs.usgs.gov/publication/pp1708D.1
ID  - pp1708D.1
ER  -