TY  - RPRT
TI  - Coal resources available for development; a methodology and pilot study
AU  - Jane R. Eggleston
AU  - M. Devereux Carter
AU  - James C. Cobb
PY  - 1990
DO  - 10.3133/cir1055
UR  - https://pubs.usgs.gov/publication/cir1055
ID  - cir1055
ER  -