TY  - RPRT
TI  - Coal quality and compositional characteristics of the Upper Freeport coal bed, Pennsylvania, source of the Argonne #1 Premium Sample
AU  - B.S. Pierce
AU  - R.W. Stanton
PY  - 1990
DO  - 10.3133/ofr90697
UR  - https://pubs.usgs.gov/publication/ofr90697
ID  - ofr90697
ER  -